Class 7 – Page 4 – Samacheer Kalvi

Samacheer Kalvi 7th Maths Solutions Term 3 Chapter 1 Number System Ex 1.4

Students can Download Maths Chapter 1 Number System Ex 1.4 Questions and Answers, Notes Pdf, Samacheer Kalvi 7th Maths Book Solutions Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 7th Maths Solutions Term 3 Chapter 1 Number System Ex 1.4

Question 1.
Simplify the following
(i) 0.6 ÷ 3
(ii) 0.90 ÷ 5
(iii) 4.08 ÷ 4
(iv) 21.56 ÷ 7
(v) 0.564 ÷ 6
(vi) 41.36 ÷ 4
(vii) 298.2 ÷ 3
Solution:
(i) 0.6 ÷ 3
= \(\frac { 6 }{ 10 } \) × \(\frac { 1 }{ 3 } \)
= \(\frac { 6 }{ 3 } \) × \(\frac { 1 }{ 10 } \)
= 2 × \(\frac { 1 }{ 10 } \)
= \(\frac { 2 }{ 10 } \)
= 0.2

(ii) 0.90 ÷ 5
= \(\frac { 90 }{ 100 } \) × \(\frac { 1 }{ 5 } \)
= \(\frac { 90 }{ 5 } \) × \(\frac { 1 }{ 100 } \)
= 18 × \(\frac { 1 }{ 100 } \) = \(\frac { 18 }{ 100 } \)
= 0.18

(iii) 4.08 ÷ 4
= \(\frac { 408 }{ 100 } \) × \(\frac { 1 }{ 4 } \)
= \(\frac { 408 }{ 4 } \) x \(\frac { 1 }{ 100 } \)
= 102 × \(\frac { 1 }{ 100 } \)
= \(\frac { 102 }{ 100 } \)
= 1.02

(iv) 21.56 ÷ 7
= \(\frac { 2156 }{ 100 } \) × \(\frac { 1 }{ 7 } \)
= \(\frac { 2156 }{ 7 } \) × \(\frac { 1 }{ 100 } \)
= 308 × \(\frac { 1 }{ 100 } \)
= \(\frac { 308 }{ 100 } \)
= 3.08

(v) 0.564 ÷ 6
= \(\frac { 564 }{ 1000 } \) × \(\frac { 1 }{ 6 } \)
= \(\frac { 564 }{ 6 } \) × \(\frac { 1 }{ 1000 } \)
= \(\frac { 94 }{ 1000 } \)
= 0.094

(vi) 41.36 ÷ 4
= \(\frac { 4136 }{ 100 } \) × \(\frac { 1 }{ 4 } \)
= \(\frac { 4136 }{ 4 } \) × \(\frac { 1 }{ 100 } \)
= \(\frac { 1034 }{ 100 } \)
= 10.34

(vii) 298.2 ÷ 3
= \(\frac { 2982 }{ 10 } \) × \(\frac { 1 }{ 3 } \)
= \(\frac { 2982 }{ 3 } \) × \(\frac { 1 }{ 10 } \)
= \(\frac { 994 }{ 10 } \)
= 99.4

Question 2.
Simplify the following.
(i) 5.7 ÷ 10
(ii) 93.7 ÷ 10
(iii) 0.9 ÷ 10
(iv) 301.301 ÷ 10
(v) 0.83 ÷ 10
(vi) 0.062 ÷ 10
Solution:
(i) 5.7 ÷ 10
= \(\frac { 57 }{ 10 } \) × \(\frac { 1 }{ 10 } \)
= \(\frac { 57 }{ 100 } \)
= 0.57

(ii) 93.7 ÷ 10
= \(\frac { 937 }{ 10 } \) × \(\frac { 1 }{ 10 } \)
= \(\frac { 937 }{ 100 } \)
= 9.37

(iii) 0.9 ÷ 10
= \(\frac { 9 }{ 10 } \) × \(\frac { 1 }{ 10 } \)
= \(\frac { 9 }{ 100 } \)
= 0.09

(iv) 301.301 ÷ 10
= \(\frac { 301301 }{ 1000 } \) × \(\frac { 1 }{ 10 } \)
= \(\frac { 301301 }{ 10000 } \)
= 30.1301

(v) 0.83 ÷ 10
= \(\frac { 83 }{ 100 } \) × \(\frac { 1 }{ 10 } \)
= \(\frac { 83 }{ 1000 } \)
= 0.083

(vi) 0.062 ÷ 10
= \(\frac { 62 }{ 1000 } \) × \(\frac { 1 }{ 10 } \)
= \(\frac { 62 }{ 1000 } \)
= 0.0062

Question 3.
Simplify the following.
(i) 0.7 ÷ 100
(ii) 3.8 ÷ 100
(iii) 49.3 ÷ 100
(iv) 463.85 ÷ 100
(v) 0.3 ÷ 100
(vi) 27.4 ÷ 100
Solution:
(i) 0.7 ÷ 100
= \(\frac { 7 }{ 10 } \) × \(\frac { 1 }{ 100 } \)
= \(\frac { 7 }{ 1000 } \)
= 0.007

(ii) 3.8 ÷ 100
= \(\frac { 38 }{ 10 } \) × \(\frac { 1 }{ 100 } \)
= \(\frac { 38 }{ 1000 } \)
= 0.038

(iii) 49.3 ÷ 100
= \(\frac { 493 }{ 10 } \) × \(\frac { 1 }{ 100 } \)
= \(\frac { 493 }{ 1000 } \)
= 0.493

(iv) 463.85 ÷ 100
= \(\frac { 46385 }{ 100 } \) × \(\frac { 1 }{ 100 } \)
= \(\frac { 46385 }{ 1000 } \)
= 4.6385

(v) 0.3 ÷ 100
= \(\frac { 3 }{ 10 } \) × \(\frac { 1 }{ 100 } \)
= \(\frac { 3 }{ 1000 } \)
= 4.6385

(vi) 27.4 ÷ 100
= \(\frac { 274 }{ 10 } \) × \(\frac { 1 }{ 100 } \)
= \(\frac { 274 }{ 1000 } \)
= 0.274

Question 4.
Simplify the following.
(i) 18.9 ÷ 1000
(ii) 0.87 ÷ 1000
(iii) 49.3 ÷ 1000
(iv) 0.3 ÷ 1000
(v) 382.4 ÷ 1000
(vi) 93.8 ÷ 1000
Solution:
(i) 18.9 ÷ 1000
= \(\frac { 189 }{ 10 } \) × \(\frac { 1 }{ 1000 } \)
= \(\frac { 189 }{ 10000 } \)
= 0.0189

(ii) 0.87 ÷ 1000
= \(\frac { 87 }{ 100 } \) × \(\frac { 1 }{ 1000 } \)
= \(\frac { 87 }{ 100000 } \)
= 0.00087

(iii) 49.3 ÷ 1000
= \(\frac { 493 }{ 10 } \) × \(\frac { 1 }{ 100 } \)
= \(\frac { 493 }{ 1000 } \)
= 0.493

(iv) 0.3 ÷ 1000
= \(\frac { 3 }{ 10 } \) × \(\frac { 1 }{ 1000 } \)
= \(\frac { 3 }{ 10000 } \)
= 0.0003

(v) 382.4 ÷ 1000
= \(\frac { 3824 }{ 10 } \) × \(\frac { 1 }{ 1000 } \)
= \(\frac { 3824 }{ 10000 } \)
= 0.3824

(vi) 93.8 ÷ 1000
= \(\frac { 938 }{ 10 } \) × \(\frac { 1 }{ 1000 } \)
= \(\frac { 938 }{ 10000 } \)
= 0.0938

Question 5.
Simplify the following.
(i) 19.2 ÷ 2.4
(ii) 4.95 ÷ 0.5
(iii) 19.11 ÷ 1.3
(iv) 0.399 ÷ 2.1
(v) 5.4 ÷ 0.6
(vi) 2.197 ÷ 1.3
Solution:
(i) 19.2 ÷ 2.4

(ii) 4.95 ÷ 0.5

(iii) 19.11 ÷ 1.3

(iv) 0.399 ÷ 2.1

(v) 5.4 ÷ 0.6

(vi) 2.197 ÷ 1.3

Question 6.
Divide 9.55 kg of sweet among 5 children. How much will each child get?
Solution:
Weight of the sweet = 9.55 Kg
Weight of sweet for 5 children = \(\frac { 955 }{ 100 } \) Kg
Weight of sweet for 1 child = \(\frac{\left(\frac{955}{100}\right)}{5}\) = \(\frac { 955 }{ 100 } \) × \(\frac { 1 }{ 5 } \) = \(\frac { 955 }{ 5 } \) × \(\frac { 1 }{ 100 } \)
= \(\frac { 191 }{ 100 } \) = 1.91
Each child will get 1.91 kg sweet.

Question 7.
A vehicle covers a distance of 76.8 km for 1.2 litre of petrol. How much distance will it cover for one litre of petrol?
Solution:
For 1.2 litre of petrol the distance covered = 76.8 Km = \(\frac { 768 }{ 10 } \) Km

For 1 litre of petrol distance covered = 64 Km

Question 8.
Cost of levelling a land at the rate of ₹ 15.50 sq. ft is ₹ 10,075. Find the area of the land.
Solution:
Cost of levelling the entire land = ₹ 10,075
Cost of levelling 1 sq. ft = ₹ 15.50

∴ Area of the land = 650 sq.ft.

Question 9.
The cost of 28 books are ₹ 1506.4. Find the cost of one book.
Solution:
Cost of 28 books = ₹ 1506.4

Cost of 1 book = ₹ 53.80

Question 10.
The product of two numbers is 40.376. One number is 14.42. Find the other number.
Product of two numbers = 40.376
One number = 14.42

Objective Type Questions

Question 1.
5.6 ÷ 0.5 = ?
(i) 11.4
(ii) 10.4
(iii) 0.14
(iv) 11.2
Answer:
(iv) 11.2
Hint:
\(\frac { 5.6 }{ 0.5 } \) = \(\frac { 56 }{ 5 } \)
= 11.2

Question 2.
2.01 ÷ 0.03 = ?
(i) 6.7
(ii) 67.0
(iii) 0.67
(iv) 0.067
Answer:
(ii) 67.0
Hint: \(\frac { 2.01 }{ 0.03 } \) = \(\frac { 201 }{ 3 } \)
= 67

Question 3.
0.05 ÷ 0.5 = ?
(i) 0.01
(ii) 0.1
(iii) 0.10
(iv) 1.0
Answer:
(ii) 0.1
Hint:

Samacheer Kalvi 7th English Solutions Term 3 Poem Chapter 2 Courage

Leave a Comment / Class 7 / By Bhagya

Students can Download English Poem 2 Courage Questions and Answers, Summary, Notes Pdf, Activity, Samacheer Kalvi 7th English Book Solutions Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 7th English Solutions Term 3 Poem Chapter 2 Courage

Read And Understand

A. Answer the following questions.

Question 1.
Can courage be developed suddenly? Why?
Answer:
No, courage cannot be developed suddenly, because it is something, deep-rooted in the soul of a man.

Question 2.
When should we have courage?
Answer:
All those who make great efforts towards a goal, should have courage.

Question 3.
Give an example for dazzling light.
Answer:
‘Fire fly’ is an example for dazzling light.

Question 4.
Can a courageous man be defeated? Why?
Answer:
No, a courageous man cannot be defeated. This is so because a brave man can never be freed of it.

Question 5.
What is the ‘breath of life’?
Answer:
Courage is the’breath of life’.

Question 6.
What are the characteristics of a courageous man?
Answer:
Patience and strength are the characteristics of a courageous man.

B. Read the following lines and answer the questions.

Question 1.
It isn’t an instantaneous thing
Born of despair with a sudden spring

(a) What does ‘it’ refer to?
Answer:
‘It’ refers to ‘courage’.

(b) What does ‘born of despair mean’?
Answer:
‘Born of despair’ means ‘born of hopelessness’.

Question 2.
It’s a slow, unwavering, ingrained trait
With the patience to work and the strength to wait.

(a) What is an ‘ingrained trait’?
Answer:
Courage is an ‘ingrained trait’.

(b) Why does a courageous man need patience?
Answer:
A courageous man needs patience because courage is a slow, steady and firm quality.

Question 3.
It’s part of his hours, his days and his years,
Back of his smiles and behind his tears.

(a) What does ‘tears’ mean?
Answer:
‘Tears’ means ‘sorrow’.

Literary Appreciation

(Rhyme Scheme: A rhyme scheme is the pattern of rhyming words at the end of each line of a poem or song. It is usually referred to by using letters to indicate which lines rhyme; lines designated with the same sound rhyme with each other.)

C. Work in pairs and answer the following.

Question 1.
Pick out the alliterated words.
Answer:

Daring – deed
thing – that
no – need
sudden – spring
something – soul
serve – some
thing – that
can – call
he – have
who – would
no – need
can – come
may – meet
his – hours

Question 2.
Pick out the rhyming words.
Answer:

Dash – flash
thing – spring
hope – rope
man – plan
resort – sport
call – fall
not – hot
goal – soul
light – sight
trait – wait
blue – do
show – go
defeat – meet
years – tears
deed – creed

Question 3.
Write the rhyme scheme of the poem.
Answer:
The rhyming scheme of the poem is ‘a a b b’.

Creative Writing

Bio – Poem
A Bio – Poem is an essay about oneself in the form of poetry.

D. Work in small groups. Pick out the adjectives and nouns that suit you using a dictionary. Read the steps given. Arrange adjectives and nouns like the given sample to construct your Bio-Poem. Present in the class.

Sarah
Strict, smart, active and friendly,
Daughter of Lazaro, sister of Francis
Lover of sports, music and reading.
Who feels enthusiastic, merry and comfortable
Who needs peace, health and prosperity
Who gives courage, money and guidance
Who fears cockroaches, spiders and lizards
Who would like to see the Himalayas, Kashmir and Europe
Lives in Australia
James

E. Collect all the poems. Compile an Anthology of BioPoems of Class VII.
Answer:
Activity to be done by the Students.

Courage Additional Questions

I. Poem Comprehension.

Question 1.
Courage isn’t a brilliant dash,
A daring deed in a moments flash;

(a) Which is a daring deed?
Answer:
Courage is a daring deed.

(b) What is a deed?
Answer:
A deed is an act.

Question 2.
For who would strive for a distant goal
Must always have courage within his soul.

(a) Who must have courage?
Answer:
The one who wants to make great effort in life, should have courage.

(b) What is a ‘goal’ here?
Answer:
A goal is a challenge or aim in life.

Question 3.
It’s part of a man when his skies are blue,
It’s part of him when he has work to do.
What do you mean by the phrase ‘his skies are blue’?
Answer:
It means enthusiastic or in a happy state.

II. Poetic Devices.

Question 1
Born of despair with a sudden spring
Pick out the alliterated words,
Answer:
sudden – spring are the alliterated words.

Question 2.
it isn’t a creature of flickered hope
Or the final tug at a slipping rope;
But it’s something deep in the soul of man
That is working always to serve some plan.

(a) What are the rhyming words?
Answer:
hope – rope; man – plan are the rhyming words.

(b) What is the rhyming scheme?
Answer:
The rhyming scheme is ‘a a b b’

III. Short Questions and Answers.

Question 1.
What do you mean by the word ‘flickered’?
Answer:
‘Flickered’ means shone unsteadily.

Question 2.
What was courage never designed for?
Answer:
It was never designed for show.

Question 3.
Where is courage written?
Answer:
Courage is written in victory and defeat.

Question 4.
What is more than a daring deed? .
Answer:
Courage is more than a daring deed.

Question 5.
What do you mean by the word ‘creed ?
Answer:
‘Creed’ means faith in oneself.

IV. Paragraph Question with Answer.

Question 1.
How is courage a daring deed?
Answer:
Courage is a daring act of a person. It is not like lightning that flashes and goes off. It is not born of hopelessness and with a sudden spring. It shines steadily and is always long-lasting. The courage always drops in and reflects itself, when the person is facing a tough time. One who wants to win a goal need to have courage. Courage is displayed in every victory and defeat. It is more than a brave deed, as it is the breath of life and the faith of a strong man.

Warm Up

Look at the ‘Face It’ chart. Discuss in small groups and tell how to face those situations.

Answer:
When we don’t win in the sports competitions or in any other field, we have to face it boldly with courage. We should be bold enough to accept the failures or defeats. We should always try to win the next game or competition with confidence.
We must be courageous in facing all our endeavours. This attitude will help us to face anything boldly.

Courage Summary

Edgar Albert Guest elaborates that courage is temporary and not a mere flash of reflection. It is not like lightning that flashes and goes off. He explains that courage is long-lasting and always remains. It leaves a deep and lasting impression. It always works in the background and keeps reflecting itself. It stays with the person in every moment, situation and throughout life in one way or the other. It holds back the person, whether he calls for it or not. The courage always drops in and reflects itself, when the person is facing a tough time. As it slips down, the situations go against the run. The poet says one who wants to win has to explore misfortune, failures and mishaps.

The poet emphasizes how one needs to take any sort of failures positively. One should hold on to courage in the tough times. One has to face and suffer the dark during the negative days in life and has to bear the unfortunate losses. The true time to test one’s courage is when one is facing a rough time. It is displayed in every victory and defeat. It is there in every challenge, a man may meet. It is more than a daring act. It is the breath of life and faith of a story man.

Samacheer Kalvi 7th Science Solutions Term 3 Chapter 5 Animals in Daily Life

Leave a Comment / Class 7 / By Bhagya

Students can Download Science Chapter 5 Animals in Daily Life Questions and Answers, Notes Pdf, Samacheer Kalvi 7th Science Book Solutions Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 7th Science Solutions Term 3 Chapter 5 Animals in Daily Life

Samacheer Kalvi 7th Science Animals in Daily Life Textual Evaluation

I. Choose the correct answers :

Question 1.
__________ is the daily essential product which is obtained from cattle.
(a) Egg
(b) Milk
(c) Both of them
(d) None of them
Answer:
(b) Milk

Question 2.
Eggs are rich in __________
(a) Protein
(b) Carbohydrate
(c) Fat
(d) Acid
Answer:
(a) Protein

Question 3.
Which parts of the goat and sheep is used for manufacturing clothes?
(a) Leg
(b) Hand
(c) Hair
(d) Head
Answer:
(c) Hair

Question 4.
The cultivation and production of silk is known as __________
(a) Horticulture
(b) Floriculture
(c) Agriculture
(d) Sericulture
Answer:
(d) Sericulture

Question 5.
Sorter’s Disease is otherwise known as __________
(a) Asthma
(b) Anthrax
(c) Typhoid
(d) Cholera
Answer:
(b) Anthrax

II. Fill in the blanks:

Proteins and __________ is rich in milk.
__________ is extracted from bee hives.
Anthrax is caused by __________
__________ is the strongest natural fibre.
Peace silk was produced in the year __________

Answer:

Calcium
Honey
Bacillus anthracis
Silk
1992

III. True or False – If False, give the correct answer :

Question 1.
Animals are the greatest gift of nature.
Answer:
True

Question 2.
Horse hair is used as bristles in small painting brushes.
Answer:
True

Question 3.
Wool is the fibre derived from the silk worm.
Answer:
(False)
Correct statement: Sill is the fibre derived from the silk worm.

Question 4.
Ahimsa silk is otherwise known as Mulberry silk.
Answer:
(False)
Correct statement: Ahimsa silk is otherwise known as peace silk.

Question 5.
Pencillin is the best medicine for curing Anthrax.
Answer:
True

IV. Match the following :

1.	Cocoons	Meat
2.	Peace silk	Poultry
3.	Broilers	Silk worm
4.	Sweet Liquid	Andhra pradesh
5.	Goat	Honey

Answer:

1.	Cocoons	Silk worm
2.	Peace silk	Andhra pradesh
3.	Broilers	Poultry
4.	Sweet Liquid	Honey
5.	Goat	Meat

V. Analogy:

Question 1.
Water: pipe : Electric current: : ______
Answer:
Wire

Question 2.
Copper: conductor : wood: : _______
Answer:
Non conductor

Question 3.
Length : metre scale : current: : _________
Answer:
Ampere

Question 4.
Milli ampere: micro ampere: 10^-3 A : : _________
Answer:
10^-6 A

VI. Very short answer :

Question 1.
Write about any two dairy products.
Answer:

Paneer
Cheese

These two are dairy products. They are Nutritive food containing protein and calcium are made from milk.

Question 2.
What are the two types of fibres that are obtained from animals?
Answer:

Wool – silk fibre is obtained from the cocoon of silkworm.
Wool is got from fleece of sheep or goat

Question 3.
What is shearing?
Answer:
The fleece of the sheep is removed from its body. This is called shearing.

Question 4.
Write the symptoms of Anthrax.
Answer:

The symptoms are fever, cough and shortness of breathe, similar to a typical pneumonia.
Sometimes it may leads to nausea, vomiting and diarrhoea. .

Question 5.
Define – Sericulture.
Answer:

Sericulture or silk farming is the cultivation of silk worm to produce silk.
It is the rearing of silk worms to obtain silk.

Question 6.
How should we treat animals?
Answer:

We must love and protect animals.
We should safeguard them and treat them with care.

Question 7.
Who invented the Ahimsa silk?
Answer:
Kusuma Rajaiah, a Government officer from Andhra Pradesh proposed Ahimsa way of silk production for the making silks without killing the silkworms.

VII. Short Answer Questions :

Question 1.
What are the characteristics of wool? Give any three.
Answer:

It is resistant to heat, water, wear and tear.
It absorbs moisture.
Wool insulates against cold. So wool is a good insulator.
It does not wrinkle easily.

Question 2.
Write about any three uses of silk.
Answer:

Silk has natural beauty and elegance.
It gives comfort in warm weather and warmth during colder months.
It is used in the manufacture of classical and high fashion clothes, modern dresses particularly silk sarees, the elegant of beautiful dresses.
It is also used in household for making wall hangings, curtains, rugs and carpets.
It is also being used in the manufacture of surgical threads for sutures.

Question 3.
What are the common diseases that are found in
Answer:

Salmonellosis (diarrhoea)	–	Caused by bacteria
Ranikhat disease, (Fowl pox)	–	Caused by virus
Aspergilleses	–	Caused by fungus

VIII. Answer in Detail

Question 1.
Write about Ahimsa Silk.
Answer:

It is also known as Peace silk.
In 1992, Kusuma Rajaiah, a Government officer from Andhra Pradesh state of India proposed ahimsa way of silk production for the making silks without killing the silkworm.
It involves a humane method specifically letting the worms to hatch and then using the vacant cocoons.
Traditional silk manufacturing methods involve boiling the cocoons of the silk worms and then sorting out the threads, which is used later in silk production.
It has been supported by many people who are interested in the welfare of animals.

Question 2.
Write about the hazards of silk industry.
Answer:

Generally, the workers in silk industry affected with arthritis is they stand for a long time reeling the silk into yarn.
They also develop back pain and visionary problem and skin injuries.
Some time they may suffer from respiratory problem like asthma and bronchitis due to poor ventilated area of their work.

Question 3.
What are the major steps involved in this wool factory?
Answer:

The processing of wool involves five major steps.
They are as follows Shearing, Grading (or) Sorting, Washing (or) Scouting, Carding and Spinning.
Shearing:- The fleece of the sheep is removed from its body. This is called shearing.
Grading (or) Sort:- The fleece from the same sheep may be different from different
parts of the body. It is sorted out into separate piles of similar nature. This is known as Grading (or) Sorting.
Washing (or) Scouts: The sheared skin is washed thoroughly with soap (or)
detergents to remove dirt, dust and grease.
Carding:- The dried wool is carefully removed. These fibres then passed through the rollers which are covered with fine sheet of thin wire teeth. This process arranges the wool into a flat sheet called a web.
Spinning:- The web is drawn into narrow strand and then passed through spinning machines. The spinning machines twist the strands into yarn. The yarn is wound to form balls of wool. This yarn is either weaved into fabric (or) retained for knitting.

Question 4.
Write the uses of the wool.
Answer:

Wool is a multifunctional fibre with a range of diameters that makes it suitable for clothing, household fabrics and technical textiles.
Two third of wool is used in the manufacture of garments including sweaters, dresses, coats and active sportswear.
Blended with other natural (or) synthetic fibres wool used as adds drape and crease resistance blankets, anti-static and noise absorbing carpets.

IX. HOTS :

Question 1.
Silk fiber is used to manufacture parachute. Why?
Answer:

Silk is the strongest natural fibre.
It is thin light in weight, strong.
It is easly to peak and unfold.
It is also fire resistant.
It is dries quickly.
It is also resistant to abrasion and chemicals.

Question 2.
Honey is recommended for all. Why? What is its significance.
Answer:

Honey has high levels of sugar.
It has antiseptic and antibacterial properties.
It can prevent cancer, heart diseases reduce ullcer and digestive problems.
It also soothes coughs and sore throats.
Hence it is recommended for all.

X. Assertion and Reason :

Question 1.
Assertion : Wool is the fibre derived from the fur of animals.
Reason : Animals like goat, Yak, Alpaca and rabbit yields wool.
(a) Both Assertion and reasoning is correct
(b) Assertion is correct but reason in wrong
(c) Assertion is wrong but reason is correct
(d) Assertion and Reason are incorrect
Answer:
(a) Both Assertion and reasoning is correct

Question 2.
Assertion : Pencillin or ciprofloxacin.
Reason (R) : These medicines cures cow pox.
(a) Assertion is correct Reason is wrong
(b) Assertion is wrong reason is correct
(c) Assertion is wrong reason is also wrong
(d) Assertion is correct and reason is correct.
Answer:
(d) Assertion is correct and reason is correct.

Samacheer Kalvi 7th Science Animals in Daily Life Intext Activities

Activity – 1

Some of the food items are given below. Find out their ingredients and sources.

Samacheer Kalvi 7th Science Animals in Daily Life Additional Questions

I. Choose the correct answer.

Qestion 1.
Honey is rich in _______
(a) sugar
(b) protein
(c) fat
(d) vitamins
Answer:
(a) sugar

Question 2.
Fowl pox is caused by _______
(a) virus
(b) bacteria
(c) fungus
(d) protozoan
Answer:
(a) virus

Question 3.
Scouting process during processing of wool refers to _______
(a) shearing
(b) grading
(c) washing
(d) spinning
Answer:
(c) washing

Question 4.
India stands _______ in silk production in the world.
(a) first
(b) third
(c) second
(d) fourth
Answer:
(c) second

Question 5.
Cashmere, Alpaca. Muga are types of _______
(a) meat
(b) fibres
(c) eggs
(d) diseases
Answer:
(b) fibres

II. Fill in the blanks.

_______ are boiled to get the silk.
The production of silk is called _______
The silk moth feed on _______
The larva of a silk worm is called _______
The process called _______ involves removal of dried wool.
_______ is the strongest natural fibre.
Egg laving chickens are called _______
The _______ bees collect the nectar from flowers.
Silk is the secretion of _______
The spread of Anthrax can be controlled by _______

Answer:

cocoons
sericulture
mulberry leaves
caterpilla
carding
silk
Layers
worker
silk moth
vaccination

III. Very Short Answer.

Question 1.
How are chickens classified?
Answer:
Chickens are broadly of two types.

Layers (egg laying chickens)
Broilers (one’s that are reared for meat).

Question 2.
List few requirements for poultry farming.
Answer:

Sufficient space
Plenty of water
Proper ventilation
Regular feed rich in proteins, fats and vitamins.

Question 3.
Name two plant fibres.
Answer:
Cotton and Jute.

Question 4.
List few characteristic features of silk.
Answer:
Characteristic features of Silk

It is very soft,comfortable and versatile
can be easily dyed.
It is the strongest natural fibre.
It has a poor resistance to sunlight exposure.

IV. Short Answer :

Question 1.
Write a note on Anthrax.
Answer:

The disease Anthrax is caused by Bacillus anthracis by handling contaminated animal hair and contact with live stock during hair processing.
The symptoms are fever, cough and shortness of breath,
It may also lead to nausea, vomiting and diarrhoea.

Treatment:

Pencillin or Ciprofloxacin is given as the best medicine for treatment of anthrax.
The spread of the disease is controlled by vaccination of animals and by burning or burial of infected animals carcases.
It is the duty of the employer to take care of the industrial workers by providing hygienic and well ventilated work place.

Samacheer Kalvi 7th English Solutions Term 3 Play Chapter 1 Jane Eyre

Leave a Comment / Class 7 / By Bhagya

Students can Download English Lesson 1 Jane Eyre Questions and Answers, Summary, Notes Pdf, Activity, Samacheer Kalvi 7th English Book Solutions Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 7th English Solutions Term 3 Play Chapter 3 Man Overboard

Vocabulary

Semantic Map
A. Read the list of words. Write down all the words related to those words. Create a “map” using a graphic organiser and discuss it in groups. One is done for you.

(Library,building,garden,student,teacher,advertisement,animal,art)
Answer:

B. Look at the list of words. Read the instructions and make Vocabulary Frames.notice hide quarrelling quickly
(notice,hide,quarrelling,quickly,tired,wide,pretty,threw)

Top Right Corner : The word’s defination
Top Left Corner : The word’s opposite
Lower Left Corner : A sentence that uses the defination of the word
Lower Right Corner : Graphic visualization
In the Centre : The word
Answer:

Three Samples are given and others to be done by the Students.

Syllable

C. Fill in the table with monosyllabic, disyllabic and trisyllabic words from the play ‘Jane Eyre’.
Answer:

Listening

D. Listen to the conversation between a father and daughter and say whether following statements are true or false.

Dad hasn’t been to this fishing spot since last year.
Dad used to go fishing with his father.
Dad has talked a lot about this fishing spot in the past.
The daughter also loves to fish.
Dad says his daughter MUST fish.
The daughter is going to cook the fish.
Dad’s fishing place hasn’t changed since he was a boy.

Answer:

False
False
True
True
False
True
False

Speaking

E. Imagine that below are some of the paintings of Jane Eyre. Discuss with your partner and describe the paintings.
Answer:

Role Play

F. Put students into groups of three and let them act as Jane.

Student 1 : I am Jane. As my parents died, I had to live with my uncle and aunt Mr. and Mrs. Reed in a town called Gateshead. My three cousins Eliza, John and Georgiana ill-treated me. After my uncle’s death, my aunt did not look after me as her daughter. She always locked me up in a red room. Besides, the maid had to listen to my aunt and did, as was told by her. My aunt wrote a letter to Mr. Brocklehurst and sent me to Lowood.

Student 2 : At Lowood, I met Miss. Muller and Miss. Temple. They put me in the fourth form. There, I got a new companion Helen Burns, who told me that their school was a charity school for the orphans. But after some time, Helen got ill and passed away leaving me alone in Lowood. I spent eight years in school – six years as a student and two years as a teacher. I wanted liberty. So I advertised in Herald for situations. A week later, I received a letter from Mrs. Fairfax, Thornfield, for a job.

Student 3 : There, at Thornfield, I was asked to teach Miss. Adela. She was Mr. Rochester’s ward. I liked Thornfield very much. I told Adela that I would teach her about nature, animals and flowers. We can study all we can that isn’t in books. I believe that art is the window of the soul. So I started teaching Adela and led a new life in Thornfield.

After this, decide who is the unhappiest of the three ‘Janes5.
Answer:
The unhappiest of the three ‘Janes’: ‘Jane’ who lived with Mrs. Reed, at Gateshead.

Reading

G. Read the story and fill in the grid by ticking each character’s qualities.
Discuss in pairs to rate the characteristic and give marks from 1 to 10 depending on the grade of each quality.
Justify your views in one or two sentences.
Answer:

Marks
Kind: 10 Marks
Patient: 7 Marks
Emotional: 4 Marks
Rich: 1 Mark
Self-disciplined: 9
Marks Courageous: 6
Marks Sensitive: 3 Marks
Friendly: 8 Marks
Caring: 5 Marks
Poor: 2 Marks
A person should always be kind, self-disciplined and friendly to others

H. Arrange the jumbled sentences and write a paragraph. Use appropriate conjunctions.

Jane Eyre is an orphan.
She lives with her aunt Mrs. Reed. ,
Mrs. Reed does not like Jane because Jane is not her daughter.
Jane’s uncle Mr. Reed likes Jane, but he dies.
He makes Mrs. Reed promise to take care of Jane, but instead she sends Jane away.
Jane is ten years old, she is sent to Lowood school.
Jane graduates and stays there to teach.
She leaves for Thornfield, where she is a governess.
She is very happy there.

Answer:
1, 2,4, 3, 5, 6, 7, 8, 9
Jane Eyre is an orphan. So she lives with her aunt and uncle Mr. and Mrs. Reed. Jane’s uncle Mr. Reed likes Jane, but he dies. Mrs. Reed does not like Jane because Jane is not her daughter. Before his death, Uncle Reed makes his wife promise to take care of Jane, but instead she sends her away. As Jane is only ten years old, she is sent to Lowood school. As, Jane gets graduated herself, she stays there to teach. From there, she leaves for Thornfield, where she becomes a governess. She is very happy there.

I. Read scene I. Discuss with your partner what Mrs Reed might write about Jane in her letter to the owner of a school. Now complete her letter to Mr. Brocklehurst.
Answer:
Gateshead Hall, Gateshead
Northumberland
Mr Brocklehurst Lowood Institution Lowood Durham
Dear Sir,
I understand that you have a school for the orphans. My niece, Miss. Jane Eyre, who is ten years old, is an orphan. She lost her parents. I am finding it difficult to bring her up here. So I request you to admit her in your charity institution. If you permit to take her, I will send her to Lowood.
Thank you.
Yours sincerely,
Mrs. Reed.

Grammar
Determiners

J. Read the passage. Choose between a little, a lot of, a few, few, fewer, many and much to fill in the gap.

DON’T CALL US, WE’LL CALL YOU!
Answer:
Two years ago, I moved to a new neighbourhood. There seemed to be very few people in this area without telephones, so I expected to get a new phone quickly. I applied forone as soon as I moved into my new house. ‘We aren’t supplying a lot of new phones in your area’, an engineer told me. ‘A few people want new phones at the moment and the company is employing fewer engineers than last year so as to save money. A new phone won’t cost you much money, but it will take a little time. We can’t do anything for you before December. ‘You need a lot of patience if you’re waiting for a new phone and you need many friends whose phones you can use as well. Fortunately, I had both. December came and went, but there was no sign of a phone. I went to the company’s local office to protest. ‘They told me I’d have a phone by December,’ I protested. ‘Which year?’ the assistant asked.

Perfect Tenses

K. Read the Time Line of Harish. Write sentences using the present perfect tense.
Answer:

Harish has been born in Madurai in 1971.
Harish and his family have moved to Chennai in 1976.
In 1993, Harish has finished college and started working for Indian Oil.
In 1996, Harish has been promoted as a manager at Indian Oil.
Harishhas met Amina in 1997.
Harish and Amina have got married in 2000.
They have had a child in 2001.

L. Read the following passage and fill in the blanks with the correct form of the verb.
Where had I gone? What had I done?
What had I seen?
Answer:
I had never seen (see) such beautiful sights before I visited Paris in 2012. I had saved (save) money for five years before I booked my trip to Paris. I was very excited! Before my trip to Paris, I had never been (be) out of India.
When I went to Paris, I spent many days touring the city. The city was big. Sometimes I got lost and asked for directions. I asked for directions in French. That was easy because I had studied (study) French for two years before I visited Paris.
By the time I left Paris, I had toured (tour) many beautiful places. The Eiffel Tower, the Notre Dame Cathedral, and the Luxembourg Gardens were just a few of the places I saw. Before I visited Paris, I had only seen (see) those places on television.

Prepositions

M. Look at the picture and write eight sentences using prepositions.
Where is the rabbit
Answer:

The rabbit is in front of the bag.
The rabbit is behind the bag.
The rabbit is under the bag.
The rabbit inside the bag.
The rabbit is on the bag.
The rabbit is between two bags.
The rabbit is near the bag.
The rabbits are running around a bag.

Comparative And Superlative Survey

N. Answer the questions below. Write your answers in the second column of the table.

a. How old are you?
b. How tall are you?
c. What bicycle do you have?
d. How many languages do you speak?
e. At what time do you usually wake up?
f. How far is your home from school?
Answer:

O. Work in groups of six. Write the other students’ names at the top of the fable. Interview each student using the above questions and complete the table with their answers.
When you have all the answers, use the results to write three comparative and three superlative sentences about the students in your group.
Examples: I am the oldest in my group.
My bicycle is more colourful than Jane’s bicycle. m
Answer:

I am younger than Reena.
Vinay is older than me.
Reena gets up earlier than Latha.
My bicycle is the most attractive one.
Latha’s home is the nearest one to the school.
Jane is the youngest in her class.

Passive Voice

P. Read the followingarticleabout theamazingsimif arities be tween the assassination of John F. Kennedy and Abraham Lincoln; then underline the passive forms.
Answer:

Abraham Lincoln was elected to Congress in 1846. Voters elected John F. Kennedy to Congress in 1946.
Lincoln was elected president in 1860. Voters elected Kennedy president in 1960.
Both men were particularly concerned with civil rights.
Both wives lost their children while living in the White House.
Lincoln was shot on a Friday. Someone shot Kennedy on a Friday.
Lincoln was shot in the head. The gunman shot Kennedy in the head.
Lincoln’s secretary was called Kennedy. Kennedy’s secretary A was called Lincoln.
Lincoln was assassinated by a Southerner. A Southerner assassinated Kennedy.
Lincoln was succeeded by a Southerner named Johnson. A Southerner named Johnson succeeded Kennedy.
Andrew Johnson, who succeeded Lincoln, was born in 1808.
Lyndon Johnson, who succeeded Kennedy, was born in 1908.
John Wilkes Booth, who assassinated Lincoln, was born in 1839. Lee Harvey Oswald, who assassinated Kennedy, was born in 1939.
Both assassins were known by their three names and both names are composed of fifteen letters.
Lincoln was shot at a theatre named “Ford”. The gunman shot Kennedy in a car called a “Lincoln” that the company Ford made.
Booth ran from the theatre and was caught in a warehouse. Oswald ran from aware house and the police caught him in a theatre.
Booth was assassinated before his trial. Someone assassinated Oswald before his trial.

Q. Reported Questions.

Question 1.
Jane told Bessie that she would hide herself in the library with Uncle Reed’s book.
Answer:
“I’ll hide myself in the library with uncle Reed’s book”.

Question 2.
John ordered Jane to come there when he called her.
Answer:
“Come here when 1 call you.”

Question 3.
Eliza asked Jane what she was doing then.
Answer:
“What are you reading now?”

Question 4.
Mrs. Reed told Bessie to take her away to the red room and lock her in there.
Answer:
“Take her away to the red room and lock her in there!”

Question 5.
Miss. Temple asked Jane whether she could read and write.
Answer:
“Can you read and write?”

Question 6.
Miss. Miller asked Miss. Temple where she should put Jane.
Answer:
“Where shall I put her Miss. Temple?”

Question 7.
Jane asked Helen why they called it an institution.
Answer:
“And why do they call it institution?”

Question 8.
Helen asked Jane why she had come there.
Answer:
“Why have you come here, Jane?”

Question 9.
Jane asked Mrs. Fairfax whether she would have the pleasure of seeing Miss. Fairfax that night.
Answer:
“Shall I have the pleasure of seeing Miss. Fairfax tonight?”

Question 10.
Miss. Adela told Jane that she could sirig and dance also.
Answer:
“I can sing and dance also.

Connecting To Self
R. Case Study.

In Charlotte Bronte’s day, many orphans were sent to institutions like Lowood.
Conduct research to find out what options exist today for children without parents.
Refer books and Internet resources as well as children’s services department in India.
Then, prepare two or three case studies, or profiles, using made-up names, that present typical situations.

Answer:
Activity to be done by the Students.

Project

S. Look at the story board. Read the captions given under each frame. Fill the bubbles and complete the story board.

Create your own story board for the scene ‘At Thornfield’.
Make a power point presentation using the story board.

”
Answer:
Activity to be done by the Students

Jane Eyre Additional Question

I. Choose the correct Synonyms from the options below.

Question 1.
mischiefs
(a) solemnity
(b) virtues
(c) tricks
(d) boons
Answer:
(c) tricks

Question 2.
uproar
(a) calm
(b) harmony
(c) quietness
(d) a loud ness

Question 3.
dependent
(a) independent
(b) unconditional
(c) helpless
(d) strong
Answer:
(c) helpless

Question 4.
screams
(a) shriek
(b) whisper
(c) relax
(d) laugh
Answer:
(a) shriek

Question 5.
behaviour
(a) idleness
(b) misbehaviour
(c) misconduct
(d) conduct
Answer:
(d) conduct

Question 6.
collapses
(a) falls
(b) succeeds
(c) increases
(d) rises
Answer:
(a) fails

Question 7.
hesitate
(a) willing
(b) certain
(c) pause
(d) resolute
(c) pause

Question 8.
quieten
(a) slow
(b) dull
(c) hasten
(d) lethargic
Answer:
(c) hasten

Question 9.
charity
(a) financial aid
(b) selfishness
(c) meanness
(d) miserly
Answer:
(a) financial aid

Question 10.
composed
(a) disturbed
(b) excited
(c) overwrought
(d) cool
Answer:
(d) cool

II. Choose the correct Antonyms from the options below.

Question 1.
eagerly
(a) happily
(b) anxiously
(c) uninterestingly
(d) strongly
Answer:
(c) uninterestingly

Question 2.
receive
(a) collect
(b) accept
(c) awarded
(d) give
Answer:
(d) give

Question 3.
desperate
(a) cheerful
(b) hopeless
(d) despairing
(d) lacking
Answer:
(a) cheerful

Question 4.
tedious
(a) boring
(b) dull
(d) monotonous
(d) exciting
Answer:
(d) exciting

Question 5.
pleasure
(a) delight
(b) comfort
(c) displeasure
(d) bliss
Answer:
(c) displeasure

Question 6.
entertain
(a) bore
(b) enjoyment
(c) consideration
(d) amusement
Answer:
(a) bore

Question 7.
horrible
(a) shocking
(b) horror
(c) agreeable
(d) dreadful
Answer:
(c) agreeable

Question 8.
frightful
(a) delightful
(b) awful
(c) horrible
(d) terrible
Answer:
(a) delightful

Question 9.
immediately
(a) instantly
(b) presently
(c)later
(d) directly
Answer:
(c) later

Question 10.
neglected
(a) cared
(b) failed
(c) ignored
(d) disregarded
Answer:
(a) cared

III. Choose the Correct Answer (MCQ).

Question 1.
Mrs. Reed is in a ______ mood at breakfast this morning.
(a) happy
(b) frightful
(c) sad
(d) jovial
Answer:
(b) frightful

Question 2.
Jane rises and cautiously goes to ______
(a) Eliza
(b) Bessie
(c) Georgiana
(d) John
Answer:
(d) John

Question 3.
Tohn‘throws the ______ at her.
(a) stofie
(b) book
(c) duster
(d) stick Big
Answer:
(b) book

Question 4.
Take her away in the ______ room and lock her in there.
(a) dark
(b) lonely
(c) red
(d) last
Answer:
(c) red

Question 5.
What shocking ______ for a young girl.
(a) behavior
(b) nature
(c) attitude
(d) quality
Answer:
(a) behavior

Question 6.
I will not be taken in by your ______
(a) game
(b) show
(c) tricks
(d) plans
Answer:
(c) tricks

Question 7.
She is let off at the gates of ______
(a) Lowood
(b) Gateshead
(c) Thornfield
(d) Northumberland
Answer:
(a) Lowood

Question 8.
It’s partly a charity ______
(a) school
(b) home
(c) organization
(d) orphanage
Answer:
(a) school

Question 9.
Jane spends ______ years in school.
(a) nine
(b) six
(c) seven
(d) eight
Answer:
(d) eight

Question 10.
You are early ______
(a) bird
(b) riser
(c) applicant
(d) person
Answer:
(b) riser

IV. Very Short Question with Answer:

Question 1.
How Old was Jane when she came to her aunt’s house?
Answer:
She was ten years old.

Question 2.
Who were her cousins?
Answer:
Her cousins were Eliza, John, and Georgiana.

Question 3.
What was the name of the servant-maid of Mrs. Reed?
Answer:
The servant-maid of Mrs. Reed was Bessie.

Question 4.
What did Bessie tell Jane?
Answer:
Bessie told Jane not to quarrel with Miss. Georgina and Eliza. If she does, the whole house would be in uproar.

Question 5.
What book was Jane reading?
Answer:
Jane was reading “Bewick’s History Of British Birds.

Question 6.
What did John do to her?
Answer:
John threw the book at her. He grasped her hair and shoulder and hit her with something.

Question 7.
What does Mrs. Reed tell Bessie to do with Jane?
Answer:
Mrs. Reed ordered Bessie to take Jane to the red room and lock her up.

Question 8.
To whom does Mrs. Reed write a letter about Jane?
Answer:
Mrs. Reed writes a letter to Mr. Brocklehurst about Jane.

Question 9.
Where was Jane sent by Mrs. Reed?
Answer:
Jane was sent to Lowood institution by Mrs. Reed.

Question 10.
How were the girls in the school dressed?
Answer:
girls were uniformly dressed.

V. Short Questions with Answers.

Question 1.
Why was Jane ill at Mrs. Reed’s house?
Answer:
When Jane was locked in the red room, she started crying and screamed loudly to let her out. She also heard some noise and saw someone. So she felt ill.

Question 2.
Where did Miss Miller and Jane enter, the next day? Who was there?
Answer:
Miss Miller and Jane entered a wide long room. There were many girls of age ten to twenty.

Question 3.
What type of school was the Lowood Institution?
Answer:
Lowood Institution was partly a charity school. It is an institution for educating orphans.

Question 4.
What happened at Lowood School, when the spring started?
Answer:
When spring started, semi-starvation and neglected colds had put most of the students at the risk of getting infection. Forty-five out of the eighty girls lay ill at one time.

Question 5.
How many years did Jane spend in Lowood School?
Answer:
Jane spent eight years in the Lowood School. She was there as a student for six years and worked as a teacher for two years.

VI. Paragraph Question with Answer.

Question 1.
Narrate the incident at Thornfield.
Answer:
Jane received a letter from Mrs. Fairfax at Thornfield to teach Adela. Jane went to if Thornfield and met Mrs. Fairfax. She gave her a warm welcome. Next morning, Miss. Adela came running to Jane followed by her attendant Miss. Varens. Jane told her that she would teach her to learn about nature, animals, and flowers. They would study all they can that isn’t in the books. They would also learn to paint and draw. She started teaching Adela and led a new life at Thornfield.

Warm-Up

Every child has a right to an education, a life free from poverty and protection from abuse. Look at the picture

Discuss in pairs and answer.

Question 1.
What are basic human rights?
Answer:

Right to Equality
Right to Freedom
Right against Exploitation
Right to Freedom of Religion, Culture, and Education.
Right to Constitutional Remedies.

Question 2.
What is education?
Answer:
Education is the process of getting knowledge, skills, values, beliefs, and habits.

Question 3.
Why do lye exceed education?
Answer:
Education gives us knowledge of the world around us and changes it into something better. It helps us build opinions and have points of view on things in life.

Think and Answer.

Question 1.
How would life be on this planet if some of the human rights are excluded?
Answer:
If human rights are excluded on this planet, men would be living as slaves and fools.

Question 2.
Are there any rights you would still like to add to the human rights list?
Answer:
I would like to add ‘the right to own your things, Freedom of thought and expression, right to social security and right to play’, to the human rights list.

Jane Eyre Summary

Jane Eyre was a ten years old girl. Her parents were deaid. So she lived with her aunt Mrs. Reed and her three cousins – Eliza, John, and Georgiana. Mrs. Reed’s house was in a town called Gateshead, in England. Jane’s uncle Mr. Reed liked her. But he was no more. He died. Mrs. Reed did not like Jane because she was not her daughter. Her three cousins always ill-treated her and Mrs. Reed locked her up in the red room. After this incident, Mrs. Reed wrote a letter to Mr. Brocklehurst who is running a school at Lowood. Jane is sent to Lowood. There Jane was put in form four with other girls. It was a charity school which was run for the orphans. Semi-starvation and neglected colds had given way to infection. Forty-five students out of eighty girls lay ill at one time. Helen, Jane’s friend, also fell ill and died. Jane spent eight years in school, six years as a student, and two years as a teacher. She got a job as a teacher at Thornfield. There she started teaching Adela and led a new life in Thornfield.

Discuss in pairs and answer.

Question 1.
Why does Jane want to go to school or learn anything in the first place?
Answer:
Jane wanted to leave the house of Mrs. Reed where she was tortured by the children of Mrs. Reed. So, she wanted to go to school.

Question 2.
Why does education become such an important issue for her as a child?
Answer:
Education becomes such an important issue for Jane because of education for every single one of her emotional and physical needs – food, shelter, friendship.

Question 3.
What does Jane’s education at Lowood prepare her to do?
Answer:
Jane suffered half starvation, terrible cold weather, lack of medical facilities, the very unhygienic environment in the Lowood school. Still, she became a teacher in that school. Her education prepared her to shoulder the hardships of life.

Samacheer Kalvi 7th English Solutions Term 3 Prose Chapter 2 A Story of Self Sacrifice and Bravery

Leave a Comment / Class 7 / By Bhagya

Students can Download English Lesson 2 A Story of Self Sacrifice and Bravery Questions and Answers, Summary, Notes Pdf, Activity, Samacheer Kalvi 7th English Book Solutions Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 7th English Solutions Term 3 Prose Chapter 2 A Story of Self Sacrifice and Bravery

Read And Understand

A. Fill in the blanks.

The terrorists asked Neerja to collect the passports of the passengers because ___________
Neerja passed on the warning in a code to the pilots because she ___________
Neerja leapt into action when she ___________
Neerja had a sour marriage due to ___________
Neerja was sent to London based on ___________

Answer:

they could identify the Americans on board
wanted to alert them
noticed there was chaos on board
pressurizing dowry demands
her performance and peer review

B. Think and Write

Question 1.
“I will die; but not run away.” – Justify the saying of Neerja.
Answer:
The family of Neerja were discussing about the sensitive situation of an imaginary hijack. Then Neerja said these words, ‘I will die, but not run away’. She was determined not to be a coward. She lived up to her word.

Question 2.
Why did the three governments of – India, America and Pakistan – honour Neerja?
Answer:
India, America and Pakistan acknowledged her act of bravery. She had saved so many passengers, risking her life. So she was honoured by these governments.

Question 3.
How can we abolish terrorism?
Answer:
We can abolish terrorism by the following ways :
(a) Stop supporting the Dictators who found terrorism.
(b) Stop Arming terrorists.
(c) Stop Imperial Conquests for Arab oil.
(d) Stop torture.
(e) Tackle corruption and money laundering.

C. Read the “Story of Self Sacrifice and Bravery” once again and complete the flow chart.
Answer:

D. Write a summary based on the flow chart.
Answer:
Neerja Bhanot was born on 7th September, 1963 in Chandigarh, Punjab, India. Her parents were Harish Bhanot and Rama Bhanot. Her father was a Mumbai based journalist. She had two brothers named Akhil and Aneesh. She started her career in modelling. She then applied for a flight attendant’s job with ‘Pan Am’. She sent to London to be trained as a Purser. Soon she became a senior flight purser. She was awarded the Ashoka Chakra award from the Indian government. A postage stamp was also issued in her honour in 2004. She was also awarded the Justice for Crimes Award and the Tamgha-e-Insaniyat Award from American and Pakistan government.

Vocabulary

E. Fill in the blanks with appropriate airline vocabulary given in the box.
(cockpit ,touch down ,call light,gate,turbulence, bumpy ,take off ,landing ,boarding pass ,runway)

You must present the __________ at the gate.
It might be a __________ ride because we are flying through a storm.
If you need anything just press the __________
The captain and the co-pilot sit in the __________
__________ 3B is down this hall and to your right.
We will be __________ in Chennai in approximately ten minutes.
The plane almost missed the __________ because it was such a bad storm.
We are next in line to __________ on this run way.
That was a very smooth __________
This __________ should only last a few minutes.

Answer:

boarding pass
bumpy
call light
cockpit
Gate
landing
run way
take off
touch down
turbulence

Phrasal Verb

F. Match the phrasal verbs in column A with their meaning in Column B

Answer:

G. Find out the anagrams. Use each pair of phrases as clues.

(An anagram is a word or phrase formed by rearranging the letters of a different word or phrase, typically using all the original letters exactly once. Eg. Seat – east, alert – alter)

1. The past tense of leap ______
Something to serve food on _____
Answer:
Leapt
Plate

2. A place to grow flowers _____
Something to be careful of _____
Answer:
garden
danger

3. Another word for under _____
A part of your arm _____
Answer:
below
elbow

4. Try to hear _____
Another word for quiet _____
Answer:
Listen
silent

5. Another word for gift _____
A large snake or a dragon _____
Answer:
present
serpent

6. Minutes and hours _____
A thing on a list _____
Answer:
time
item

7. An organ that pumps blood _____
The planet we live on _____
Answer:
heart
earth

8. Something used to water plants _____
A thing you put on your foot _____
Answer:
hose
shoe

Listening

H. Listen to the announcements and answer the questions.

Announcement 1

Question 1.
What is the number of the flight?
Answer:
The number of the light is 89 B.

Question 2.
What are the things to be kept ready?
Answer:
Boarding Pass and Identification are the things to be kept ready.

Question 3.
When will the regular boarding begin?
Answer:
The regular boarding will begin in approximately ten minutes.

Announcement 2

Question 1.
For whom is the final boarding call?
Answer:
The final boarding call is for passengers Alex and Ruskin Collins.

Question 2.
Where should the passengers proceed?
Answer:
The passengers should proceed to gate 3 immediately.

Question 3.
Where is the flight to?
Answer:
The flight is to New Delhi.

Announcement 3

Question 1.
When will the flight be in the air?
Answer:
The flight is expected to be in the air in approximately seven minutes.

Question 2.
What are things that should be turned off?
Answer:
All personal electronic devices including laptops and cell phones should be turned off.

Question 3.
What is prohibited during the flight?
Answer:
Smoking is prohibited during the flight.

Speaking

I. Read the story board and take roles as pilot and flight attendants to enact the scene. Inflight Passenger Announcements.
Answer:
Flight Attendant 1 : Ladies and Gentlemen, this is Indian Airline flight 999 bound for New York. This is a reminder that all carry-on baggage must fit securely either in the overhead compartments or under the seat in front of you.

Flight Attendant 2 : The captain of this flight is Ms. Fatima. And I am Sylvia, the in-flight time to the destination will be eleven hours and 14 minutes. Our captain will provide you with more information after take-off.

Flight Attendant 1 : Before our departure, please make sure that your seats are in the upright position and tray tables are stowed. Also, please be aware that this is a non-smoking cabin and smoking in the . lavatory or any part of the cabin is strictly prohibited.

Flight Attendant 2 : Cell phones and other electronic devices should be switched off while landing and take-off. We advise you to remain seated and fasten your seat belt at all times during our flight. On behalf of Indian Airline, we welcome you on board and wish you a pleasant journey. Please feel free to ask any attendant for assistance. Thank you!

Pilot : Hello everyone, this is the captain speaking, and I want to welcome you to Flight 18 bound for New York. Our flight time today is llhours and 14 minutes, and we will be flying at an average altitude of 29,000 feet. The local time at New .York is a quarter to twelve (11:45), and the current weather is sunny, but there is a chance of rain later in the day. We will be arriving at Gate 13.

Flight Attendant 1 : On behalf of Indian Airlines and the crew, I want to wish you an enjoyable stay in the Seattle area or at your final destination. Now, please sit back and enjoy the flight. Thank you.

J. Imagine that you are going to interview one of the survivors of the Pan Am Hijack. Discuss with your partner and write down the conversation. Then one of you play the role of the interviewer and other the survivor. You can use the sample questions given below.

Do you have any information regarding the suspects of the hijack?
Which countries did the hijackers belong?
What are the details of the hijacked flight?
How many passengers were aboard?
What happened in the last few minutes of the hijack drama?
Do you have information regarding the victims?
Was there any recorded communication to/from the plane during the hijacking?
How many terrorists were there?
How did you feel when you were in the flight?
Can you recall Neerja’s role in safeguarding the passengers?

Answer:
Interviewer : Good Morning Sir. This is Manoj Tiwari from the ’Hindu’. I would like to interview you, as you are one of the survivors of the ’Pan Am Hijack’.
Survivor : Yes, it’s true. I should thank the Almighty God and Neerja for saving our lives.
Interviewer : Yes, she had done a brave act, risking her life. Do you have any information regarding the suspects of the hijack?
Survivor : No, I don’t have any information about them. But they do belong to Palestinian Organisation backed by Libya.
Interviewer : How many passengers were on board?
Survivor : There were around 360 passengers and 13 crew members.
Interviewer : How many terrorists were there?
Survivor : There were four Armed Terrorists.
Interviewer : Was there any recorded communication to / from the plane during the hijacking?
Survivor : I don’t remember anything like that happened.
Interviewer : How did you feel when you were in the flight?
Survivor : We were all holding our breaths and terrified.
Interviewer : Can you recall Neerja’s role in safeguarding the passengers?
Survivor : She shed all her hesitations and fears and worked her way around evacuating as many passengers as she could. She waited selflessly in the face of death to help the ones around her. Such a great soul she is!

K. Read the story hoard and take roles as pilot and flight: attendants to enact the scene.
Answer:
Flight Attendant 1 : Ladies and Gentlemen, this is Indian Airline flight 999 bound for New York. This is a reminder that all carry-on baggage must fit securely either in the overhead compartments or under the seat in front of you.

Grammar
Direct And Indirect Speech

L. Discuss with your partner and punctuate the following.

Question 1.
the woman said to the student please help me cross the street
Answer:
The woman said to the students, “please help me cross the street,”

Question 2.
sarathy said oh how thrilling it was
Answer:
Sarathy said, “Oh, how thrilling it was!”

Question 3.
the teacher said to the students where do you want to go
Answer:
The teacher said to the students, “Where do you want to go ?”

Question 4.
i am tired mohana said to her aunt
Answer:
I am Ham tired, “Mohana said to her aunt.

Question 5.
shankar said to his teacher madam i had prepared my project assignment but i forgot to bring it
Answer:
Shankar said to his teacher, “Madam, I had prepared my project assignment, but I forgot to bring it.”

M. Complete the sentences in reported speech.
Example : I admire you. She said that she admired me.

“It is too late.” I said that it ______ too late.
I met you yesterday.” Sam told me that he had met me ______
“I cannot come.” Mala said that ______
“I will pay tomorrow.” He said that he would pay ______
“The Himalayas are the highest mountain ranges.” He knew that the Himalayas ______ the highest mountain ranges.
“I may lend you some money” Balu promised ______ some money
“I have been watching a film.” He said that ______ a film.
“I have not done it today.” I explained that I had not done it ______
“I was with him last week.” Jimmy told that ______ with him the previous week.
“I will finish this picture tomorrow.” Jothi said that ______ picture the next day.

Answer:

was
the previous day
she couldn’t come
the next day
are
to lend him
he had been watching
that day
he was
he would finish that

N. Read the following dialogue and report it.

Betty : What are you doing here, Kitty? I haven’t seen you since June.
Kitty : I’ve just come back from my holiday in Darjeeling.
Betty : Did you enjoy it?
Kitty : I love Darjeeling. The landscape is amazing.
Betty : Did you go to the Lloyd’s Botanical Garden?
Kitty : Yes. It was my first trip. I can show you some pictures. Are you doing any thing tomorrow?
Betty : I must arrange a couple of things. But I am free tonight.
Kitty : You might come to my place. What time shall we meet?
Betty : I’ll be there at eight. Is it all right?
Answer:
Betty asked Kitty what she was doing there And she added that she hadn’t seen her since June. Kitty explained that she had just come back from her holiday in Darjeeling. Betty asked if she had enjoyed it. Kitty told her that she loved Darjeeling and that the landscape was amazing Betty wanted to know if she had gone to the Lloyd’s Botanical Garden. Kitty said that it had been her first trip and that she could show her some pictures. And then she asked her if she was doing anything the next day. Betty explained that she had to arrange a couple of things. But she added that she was free that night. Kitty suggested that she might come to her place and asked her at what time they should meet Betty said she would be there at eight. And finally, she asked whether it was all right.

Writting

O. Read the story of Neerja Bhanot. Make notes based on the table and complete it.
Answer:

Name	Neerja Bhanot
Father’s Name & Occupation	Harish Bhanot – Mumbai-based Journalist
Mother’s Name & Occupation	Rama Bhanot
Born on	7^th September, 1963
Nationality	Indian
State	Punjab
City	Chandigarh
Education	School : 1. Sacred Heart School, Chandigarh. 2. Bombay Scottish School, Mumbai
Higher Education	College: St, Xavier’s College, Mumbai.
Career	Modelling, Flight Attendant’s job
Personal Life	Marriage,Flight attendant’s job
Siblings	Two brothers Akhil and Aneesh
Achievements	1. Senior Flight Purse at 22 Years 2. The youngest civilian to be awarded the AshokChakra, the highest honour for bravery
Awards	Ashok Chakra (1987), Justice for Crimes Award (2005) and TamghaeInsaniyat Award (1987).
Legacy	Insurance Money and Funds from ‘Pan Am’
Died on	September 5,1986
Place of Death	Karachi Airport

Creative Writing

P. “Heroes are ordinary people who do extraordinary things.” Write an anecdote on the extraordinary deed of Jaiswal K.P. who helped in the recent Kerala Flood.Use the tips given in the box.

Answer:
Activity to be done by the students

A Story of Self Sacrifice and Bravery Additional Question

I. Choose the correct Synonyms from the option given below

Question 1.
assaulted
(a) hit
(b) attacked violently
(c) cut
(d) scolded
Answer:
(b) attacked violently

Question 2.
disaster
(a) misfortune
(b) luck
(c) merit
(d) happiness
Answer:
(a) misfortune

Question 3.
achievement
(a) failure
(b) disappointment
(c) approval
(d) success
Answer:
(d) success

Question 4.
injustice
(a) fairness
(b) unfairness
(c) equality
(d) delight
Answer:
(b) unfairness

Question 5.
distress
(a) happiness
(b) joy
(c) merriness
(d) sorrow
Answer:
(d) sorrow

Question 6.
chaos
(a) order
(b) discipline
(c) confusion
(d) law Ml
Answer:
(c) confusion

Question 7.
citation
(a) quotation
(b)thought
(c) morality
(d) scandal
Answer:
(a) quotation

Question 8.
fatal
(a) harmless
(b) beneficial
(c) death
(d) devoted
Answer:
(c) death

Question 9.
succumbed
(a) surrendered
(b) won
(c) defeated
(d) battled
Answer:
(a) surrendered

Question 10.
mandate
(a) announcement
(b) an official order
(c) assessment
(d) truth
Answer:
(b) an official order

II. Choose the correct Antonyms from the Options given below.

Question 1.
confronted
(a) challenged
(b) opposed
(c) tackled
(d) avoided
Answer:
(d) avoided

Question 2.
calamity
(a) blessed
(b) damage
(c) distress
(d) disaster
Answer:
(a) blessed

Question 3.
foremost
(a) prominent
(b) outstanding
(c) hindmost
(d) topmost
Answer:
(c) hindmost

Question 4.
attempted
(a) struggled
(b) offered
(c) prevented
(d) gambled
Answer:
(c) prevented

Question 6.
helplessness
(a) helpfulness
(b) power full
(c) inability
(d) emotionless
Answer:
(a) helpfulness

Question 7.
senselessness
(a) meaningless
(b) foolish
(c) sensible
(d) stupid
Answer:
(c) sensible

Question 8.
rescued
(a) imprisoned
(b) saved
(c) liberated
(d) freed
Answer:
(a) imprisoned

Question 9.
similar
(a) resembled
(b) different
(c) identify
(d) same
Answer:
(b) different

Question 10.
includes
(a) comprises
(b) contains
(c) excludes
(d) covers
Answer:
(c) excludes

III. Choose the Correct Answer (MCQ).

Question 1.
The passengers on the ________ hailed from different countries.
(a) plane
(b) train
(c) bus
(d) vehicle
Answer:
(a) plane

Question 2.
The terrorists were more intent on targetting the ________
(a) Indians
(b) Pakistanis
(c) Americans
(d) Arabs
Answer:
(c) Americans

Question 3.
The hijackers wanted to fly to Israel and crash the plane against a ________
(a) 40 storey building
(b) building
(c) harbour
(d) flight
Answer:
(b) building

Question 4.
The ________ on the aircraft continued for long.
(a) chaos
(b) confusion
(c) nightmare
(d) terror
Answer:
(c) nightmare

Question 5.
The marriage proved to be a ________
(a) failure
(b) unsuccessful
(c) successful
(d) disaster
Answer:
(d) disaster

Question 6.
Only 80 of the ________ applicants were picked.
(a) 10,000
(b) 600
(c) 10,000
(d) 2,000
Answer:
(a) 10,000

Question 7.
She was sent to Miami to be trained for ________ weeks.
(a) 5 to 7
(b) 8 to 10
(c) 6to8
(d) 2to3
Answer:
(c) 6to8

Question 8.
A postage stamp was also issued in her honour in ________
(a) 2002
(b) 2004
(c)2001
(d)2003
Answer:
(b) 2004

Question 9.
The trust presents two awards ________
(a) e very week
(b) every month
(c) every year
(d) every two years
Answer:
(c) every year

Question 10.
Some people ________ even after death.
(a) glitter
(b) live
(c) lighten
(d) shine
Answer:
(d) shine

IV. Very Short Questions with Answers.

Question 1.
What was the name of the hijacked plane?
Answer:
The name of the hijacked plane was ’Pan Am’.

Question 2.
Where was the flight hijacked? .
Answer:
The flight was hijacked at Karachi Airport.

Question 3.
What was Neerja?
Answer:
Neerja was a senior flight Purser.

Question 4.
When was Neerja married?
Answer:
Neerja was married in March 1985.

Question 5.
When did she leave her husband?
Answer:
She left her husband at the age of 22 years.

Question 6.
Name an advertisement, she appeared while modelling?
Answer:
Binaca toothpaste was the advertisement, she appeared, while modelling.

Question 7.
Why was she sent to Miami?
Answer:
She was sent to Miami to be trained for 6 to 8 weeks.

Question 8.
When was the postage stamp issued in her honour?
Answer:
A postage stamp was issued in her honour in 2004.

Question 9.
Who went to Washington D.C. to receive the award?
Answer:
Her brother went to Washington D.C. to receive the award.

Question 10.
Who set up the Neerja Bhanot Pan Am Trust?
Answer:
Her parents set up the Trust.

V. Short Questions with Answers.

Question 1.
Who were the terrorists targetting? What did they do?
Answer:
The terrorists were more intent in targetting the Americans, So they told Neerja to collect all the passports of the passengers.

Question 2.
How many Americans were saved with her help?
Answer:
She saved at least 39 Americans out of 41 passengers with her immediate action.

Question 3.
Why were the terrorists at a loss of pilots?
Answer:
As per the mandate, the pilots made an escape through the alternate exit. So the terrorists were at a loss of pilots.

Question 4.
Why did Neerja leave her husband?
Answer:
She left her husband because of the dowry demands.

Question 5.
What was named after her in Mumbai and by whom?
Answer:
A square in Mumbai’s Ghatkopar (East) Suburb was named after her by Mumbai Municipal Corporation.

VI. Paragraph Question with Answer.

Question 1.
Narrate the disaster of Neerja’s married life.
Answer:
EUTES Though Neerja’s career had taken off, her family decided to get her married to a man in Sharjah, UAE. She was married in the month of March 1985. This is where her life took a turn for the worse. The marriage proved to be a disaster. After two months, she left her husband at the age of 22. This was due to the pressurizing dowry demands. Neerja refused to surrender to the society because . she was born with the spirit to fight.

A Story of Self Sacrifice and Bravery Grammar Additional

Direct And Indirect Speech

Direct Speech:

Exact words of the speaker within quotation.
Verb within quotations is in the present tense forms.
Punctuations like full stop, question marks and exclamations should occur before the quotation closes.
‘Wh’ questions within quotations.
‘Yes’ or ‘no’ questions begin with helping verbs like (is, was, are, were, am), will, shall, may, can, have, has, do, does.
Use of ‘I’, ‘You’ in the direct speech.

Indirect Speech:

The exact words need not be used to convey the i message.
Verbs in the present tense must be changed to their corresponding past tense.
All indirect statements, or questions or exclamations end with a full stop.
‘Wh’ words are subordinating conjunctions in the indirect speech.
All the helping verbs occur in the past tense after the subject.
Change to ‘he’ / ‘she’ according to the speaker and listener.

I. Complete the sentences in reported speech.

‘I will meet you tomorrow’. She said that she ________ me the next day.
‘I can do all this work myself. He said that he ________ himself.
‘Stop telling lies’. She ordered him ________ telling lies.
‘We will come to your house tomorrow’. They said that ________ to her house ________
‘My Dad has left just now’.saru told me that Dad ________

Answer:

would meet
could do all that
to stop
they would come; the next day
had left just then

II. Punctuate the following,

Question 1.
what a wonderful sight it is said anu
Answer:
“W hat a wonderful sight it is saidA nu

Question 2.
she bought some pens pencils erasers and scale from the stationery shop
Answer:
She bought some pens pencils erasers and scale from the stationery shop

Question 3.
get up it is getting late said her mother
Answer:
“G et up I is getting late” said her mother

Question 4.
dont shout in the classroom keep quiet said the teacher
Answer:
“Don t shout in the classroom keep quiet” said the teacher

Question 5.
what are you doing here asked the watchman
Answer:
“What are you doing here asked the watchman

Warm Up

Many people become engineers, doctors, IAS officers, film stars and so on. But few become ‘‘Human”,
Look at the pictures.
Discuss and answer.

Question 1.
What makes a person a hero?
Answer:
A person becomes a hero, if he risks his / her life for the sake of others.

Question 2.
How do heroes make a difference?
Answer:
A hero is a person of distinguished courage and ability. They are admired for their brave deeds and noble qualities.

Question 3.
Does every hero have to fight or risk their life?
Answer:
No, not every hero has to fight or risk his life. If he values humanity and does his best, he is a hero.

Think and Answer.

Question 1.
Can you think of a situation in which taking a small action would make a big difference?
Answer:
One day, I joined a mission-oriented online group. I raised money for a good cause. I started my own website. I volunteered for it remotely. I donated for a good cause. A small action of mine, made a big difference in my life.

Question 2.
What about everyday heroes, who do small but important acts?
Answer:
Everyday heroes should be appreciated for their valuable acts of brave deeds. They are not admired because their acts are unknown to the public.

Question 3.
Are these people really heroes?
Answer:
Yes, these people are really heroes.

A Story of Self Sacrifice and Bravery Summary

Section – I

Pan Am Flight

The aircraft ‘Pan Am Flight 73’ with 360 passengers on board was hijacked by four heavily armed terrorists. It was ready to depart from Jinnah International Airport in Karachi to United States. It was hijacked, while it was parked at Karachi airport. The passengers were Indians, Germans, Americans, Pakistanis and others. The terrorists were more intent on targetting the Americans. Neerja, a senior flight purser, was asked to collect the passport of the passengers. She managed to hide and throw them down the rubbish chute. The hijackers wanted to fly to Israel and crash the plane against a building. Neerja alerted the pilots in the cockpit of the hijacked plane, so that they could save themselves. When the terrorists knew this, they attacked her violently. Responding to her warning, the pilots escaped through an alternate exit. The terrorists were at a loss of pilots.

The frustration and helplessness of the terrorists grew every hour. They became impatient. After seventeen hours of the hijack, the plane ran out of power. The terrorists were armed with grenades, plastic explosive belts and pistols. They started to fire the passengers and there was confusion on board. Taking advantage of this, Neerja leapt into action. She started saving as many passengers as she could. As she was about to exit herself, she noticed three children in the flight. She rescued the kids. But she was hit by the bullets fired by the terrorists. This heroic young girl passed away, as the wounds were fatal.

Discuss and answer.

Question 1.
How did Neerja save the Americans?
Answer:
Neerja saved the Americans by hiding their passports and throwing them down the rubbish bins.

Question 2.
Why did Neerja alert the pilots?
Answer:
Neerja alerted the pilots to escape through the alternate exits.

Question 3.
What happened when the terrorists lost their patience?
Answer:
When the terrorists lost their patience, Neerja leapt into action. She shed all her hesitation and fears. She worked her way around helping to save as many passengers as she could.

Section – II

Neerja Bhanot – Life

Neerja Bhanot was born on 7th September 1963 in Chandigarh, Punjab. Her parents were Rama Bhanot and Harish Bhanot. Her father was a journalist. She was the third child of the couple. She had two brothers, Akhil and Aneesh. She studied in Sacred Heart School till 6th Standard. After that, they moved to Mumbai. There, she attended Bombay Scottish School. She graduated from St. Xavier’s College. She got married to a man in Sharjah, UAE in March 1985. This marriage proved to be a disaster. After two months, she left her husband due to dowry demands. She refused to surrender to the society, as she was born with a spirit to fight. She started her career in modelling and made appearances in various advertisements like “Binaca toothpaste”.

Neerja applied for a flight attendant’s job with ‘Pan Am’. It was the largest international air carrier in the United States at that time. Neerja was one among the 80 applicants who were selected. She was sent to Miami to get trained for 6 to 8 weeks. Then she was sent to London to be trained as a purser, the senior-most cabin manager. Her duty was handling passenger’s complaints, making required announcements and handling security. She was soon made a senior flight purser with the airways. It was a big career achievement for a young woman of 22.

Discuss and answer.

Question 1.
Name the schools and colleges Neerja studied in.
Answer:
Neerja studied in Sacred Heart School and Bombay Scottish School. She got graduated from St. Xavier’s College.

Question 2.
Why was Neerja sent to London?
Answer:
Neerja was sent to London to train to be a Purser.

Question 3.
What is the duty of a purser?
Answer:
Pursers worked as managers on flights. They handled passenger complaints and security, They also made required announcements.

Section – III

Award, Achievement And Legacy

The Ashok Chakra citation read “Her loyalties to the passengers of the aircraft in distress will forever be a lasting tribute to the finest qualities of the human spirit”. The government of India, Pakistan and America acknowledged her act of bravery. They rewarded her with various awards. Ashok Chakra, which was India’s highest honour for bravery in peacetime was awarded to her. A postage stamp was also issued in her honour in 2004. She was awarded the ‘Justice for Crimes Award’ and ‘Tamgha-e-Insaniyat award’. Her parents set up “the Neerja Bhanot Pan Am Trust” with the insurance money and the funds from ‘Pan Am’. The trust presented two awards every year – one to honour a dedicated flight crew member, worldwide. Another award was presented to an Indian woman who overcomes social injustice and helps other women in social distress. The award includes a sum of INR 1,50,000, a trophy and a citation.

One of the children, who had been saved by Neerja during the hijack, is now a captain of a major airline. Some people, shine even after death. Neerja was one among them. Even the streets of Mumbai remember her. A square in Mumbai’s Ghatkopar (East) suburb was named after her by the Mumbai Corporation.

Samacheer Kalvi 7th Science Solutions Term 3 Chapter 1 Light

Leave a Comment / Class 7 / By Bhagya

Students can Download Science Chapter 1 Light Questions and Answers, Notes Pdf, Samacheer Kalvi 7th Science Book Solutions Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 7th Science Solutions Term 3 Chapter 1 Light

Samacheer Kalvi 7th Science Light Textual Evaluation

I. Choose the correct option:

Question 1.
Light travels only in a ______ .It is because of this property that.
(a) curved line, shadows
(b) straight line, shadows
(c) straight line, reflection
(d) curved line and then straight line, shadows
Answer:
(b) straight line, shadows

Question 2.
Light that hits a mirror gets ______
(a) Transmitted
(b) Reflected
(c) Absorbed
(d) Refracted
Answer:
(b) Reflected

Question 3.
______ surface reflects the light well
(a) Water
(b) Compact disc
(c) Mirror
(d) Stone
Answer:
(c) Mirror

Question 4.
Light is a form of ____
(a) matter
(b) energy
(c) medium
(d) partical
Answer:
(b) energy

Question 5.
You can see your image in polished floors, but not in wooden table because ______
(a) regular reflection takes place in wooden table and irregular reflection in polished floor
(b) regular reflection takes place in polished floor and irregular reflection in wooden table
(c) regular reflection takes place in both polished floor and wooden table
(d) irregular reflection takes place in both polished floor and wooden table
Answer:
(b) regular reflection takes place in polished floor and irregular reflection in wooden table

Question 6.
Choose the translucent substance from the following
(a) glass
(b) wood
(c) water
(d) Clouds
Answer:
(d) clouds

Question 7.
Reflection occurs , when the light
(a) about to reach a surface
(b) approaches a surface
(c) passes through a surface
(d) None Of these
Answer:
(b) approaches a surface

Question 8.
Which of the following is the best reflector
(a) plastic plate
(b) plane mirror
(c) wall
(d) paper
Answer:
(b) plane mirror

Question 9.
Sivarajan placed a meter stick in the playground at 7.00 am in the morning. How will the shadow of the stick at noon look in comparison to the one in the morning
(a) There will be no shadow
(b) The shadow will be longer and on the opposite side as the sun
(c) The shadow will be shorter and on the same side as the sun
(d) The shadow will be shorter
Answer:
(d) The shadow will be shorter

Question 10.
The image formed by a pinhole camera is inverted because,
(a) light travels in straight lines
(b) light rays become laterally inverted as they pass through a pinhole camera
(c) light rays pass through the pinhole
(d) light rays get reflected
Answer:
(a) light travels in straight lines

Question 11.
Which of the following facts explain how shadows are formed?
(a) Light travels in straight lines
(b) Opaque bodies do not allow light to pass through them
(c) Reflection occurs at a smooth surfaces like mirrors
(d) Lateral inversion happens
(a) both A and B
(b) both A and D
(c) both B and C
(d) only A
Answer:
(a) both A and B

II. Fill in the blanks:

A plane mirror produces a _________ image
A _________ reflection helps us to see the objects.
The light ray gets _________ when it falls on any polisher surface
Sunlight is a blend of _________ colours
The splitting of white light into seven colours is called _________
The moon _________ sun light.
The sunlight can be split into its constituent colours using _________
Reflection of light from rough surface is called _________ reflection

Answer:

virtual and erect
regular
reflected
seven
dispersion
reflects
prism
irregular

III. Say TRUE or FALSE.

Question 1.
The image of right hand in a plane mirror looks like a left hand.
Answer:
True

Question 2.
Rainbow is formed by dispersion of which light by water drops.
Answer:
True

Question 3.
The image formed by the plane mirror is laterally inverted, hence the image seen through the periscope is also laterally inverted
Answer:
False
Correct statement: The image formed by the plane mirror is laterally inverted, hence the image seen through the periscope is This is because in periscope, image is reflected by two mirrors.

Question 4.
We see planets because they reflect light from the sun
Answer:
True

Question 5.
We see a book because it reflects the light that falls on its surface
Answer:
True

Question 6.
The image formed in a pinhole camera is always inverted
Answer:
True

Question 7.
The image formed in a pinhole camera is always the satne size as the object
Answer:
False

Question 8.
The image formed in a plane mirror is upside down
Answer:
False
Correct statement: The image formed in a plane mirror is erect.

Question 9.
A plane mirror is opaque Ans.
Answer:
True

Question 10.
A shadow is formed on the same side of the object as the source of light.
Answer:
False
Correct statement: A shadow is formed on the side of the object as the source of light.

Question 11.
We are able to see things around us with the help of regular reflection
Answer:
True

Question 12.
After passing through a prism, white light splits into a band of seven colours
Answer:
True

IV. Match the following

1.	Rectilinear propagation	Primary source of light
2.	Rectilinear propagation	Non-luminous object
3.	Plane Mirror Fire fly	Periscope
4.	The Moon	Pinhole camera
5.	Wide light source	Spectrum of light
6.	Regular reflection	luminous object
7.	The sun	Penumbra
8.	Band of seven colors	Glossy surface

Answer:

1.	Rectilinear propagation	Pinhole camera
2.	Rectilinear propagation	Periscope
3.	Plane Mirror Fire fly	luminous object
4.	The Moon	Non-luminous object
5.	Wide light source	Penumbra
6.	Regular reflection	Glossy surface
7.	The sun	Primary source of light
8.	Band of seven colors	Spectrum of light

V. Answer the following questions in short:

Question 1.
With the help of a diagram, state the laws of reflection
Answer:
Laws of reflection:

The angle of incidence is always equal to the angle of reflection li =l*
The incident ray, the reflected ray and the normal at the point of incidence lie on the same plane.

Question 2.
Figure shows a pencil placed above a mirror

a) Draw its image formed by the mirror
b) Show how light rays from the object are reflected at the mirror to form the image for the eye.
Answer:

Question 3.
A person is looking at the image of a tree in a mirror placed 3.5 m in front of him. Given that the tree is at 0.5 m behind his eyes. Find the distance between the image of the tree and his eyes. What are needed to see an object?
Answer:

Distance between the person and the mirror = 3.5 m
Distance between the person and tree (object) = 0.5 m
The image formed in the mirror = 4 m
The distance between the image of the tree and his eyes = 4 + 3.5 = 7.5

Question 4.
What are luminous objects?
Answer:
All objects which emit light energy by themselves are called luminous objects. Ex.: Sun, electric bulb.

Question 5.
Is thr moon a luminous object?
Answer:
No, the moon is non-luminous. The reason is that moon does not produce its own light. Instead, it reflects the light of the sun falling on it.

Question 6.
What are the three types of materials based on the absorption of light?
Answer:

Transparent Material
Translucent Material
Opaque Material

Question 7.
What are the parts of shadow?
Answer:

Umbra
Penumbra

Question 8.
What are the properties of shadow?
Answer:
Properties of shadow:

All objects do not form shadows. Only opaque objects form shadows.
Shadows will be formed in the opposite side of light source.
It cannot be determined the characteristics of an object by its shadow.
The shadow will be always darker, whatever may be the color of light rays.
Light source, opaque object are shadow all are in a straight line.
The size of shadow depends upon the distance between light source and object and the distance between object and the screen.

Question 9.
What is plane mirror?
Answer:
A plane mirror is a mirror with a flat reflective surface. A plane mirror makes an image of objects in front of it.

Question 10.
What is prism?
Answer:
A prism is an object made up of a transparent material, like glass or plastic that has at least two flat surfaces that form an acute angle (less than 90°).

Question 11.
What do you mean by visible light?
Answer:
Visible light is a spectrum of a number of waves with different wavelength range from 400nm to 700nm (lnm = 10″9 meter) each wave has a definite wavelength represents a particular colour.

Question 12.
Write the items given here in the correct column (Stars, brick walls, plants, mirror, planets, electric light bulb, candle)

Sources of Light	Objects that reflect light

Answer:

Sources of Light	Objects that reflect light
Stars	Brick walls
Electric light bulb	Plants
Candle	Mirror
	Planets

Question 13.
A boy of height lm 45 cm is standing in front of a long mirror at a distance of 2 m. From this information, fill up the following sentences:
a) The distance between the boy and his image is ______
b) The height of the image is ______
c) When the boy moves 1 m forward, the distance between her and her image is ______
Answer:
(a) The distance between the boy and his image is 4m
(b) The height of the image is same.
(c) When the boy moves 1 m forward, the distance between her and her image is 2m.

Question 14.
Draw a diagram of a pinhole camera showing the rays of light passing between the Object and its image
Answer:

Question 15.
Why is the writing on the front of an ambulance back to front as shown in the picture

Answer:

This is due to lateral inversion.
The phenomenon due to which the left side of an object appears to be right side of the object in its image in a reflecting medium (mirror).
So that drivers see the word the right way around in their rear-view mirror.

Question 16.
Explain with examples, why some capital letters look the same in a mirror but others are reversed.
Answer:
Any letter that has a bilateral symmetry will have its mirror image the same as that of the object.
Example:

Question 17.
Two plane mirrors M1 and M2 are placed perpendicular with each other, as shown in figure. The ray AB makes an angle 39° with the plane mirror M , then

The reflected rays are _________, ____________
The incident rays are _________, ____________
What is the angle of incident corresponding to the ray BC?
What is the angle of reflection corresponding to the ray CD

Answer:

BC, CD
AB, BC
\(\lfloor i\) = 39°
\(\lfloor r\) = 39°

Question 18.
Raj an was playing with the mirror images of a clock. He looked at the clock in his roomIt was showing 1:40. Draw the position of the hands on the real clock and on its mirror reflection .Write below the picture what time each picture

Answer:

Question 19.
What is reflection of light?
Answer:
The bouncing back of light from a reflecting surface of an object is called as reflection of light

Question 20.
If a ray of light is falling on a plane mirror at an angle of 50° is formed, what will be the angle of reflection?
Answer:

Angle of incidence \(\lfloor i\) = 90° – 50°
\(\lfloor i\) = 40°
According to laws of reflection,
\(\lfloor i\) = \(\lfloor k\)
Angle of incidence = Angle of reflection
\(\lfloor i\) = 40°
∴ \(\lfloor r\) – 40°
Angle of reflection \(\lfloor r\) = 40°

Question 21.
What do you mean by lateral inversion?
Answer:
The phenomenon due to which left hand side of object appears as right hand side and vice versa is called lateral inversion.

Question 22.
How do you obtain a spectrum of light?
Answer:
When white light is made to fall on the surface of a prism, it disperses and we obtain a spectrum of light.

Question 23.
Why do we see white color in Newton’s disc, when we rotate it very fast?
Answer:
When the disc turned quickly, the retina receives the sensation of the spectrum simultaneously and disc appears white.

Question 24
What is a shadow? What things are necessary for the formation of a shadow?
Answer:

Shadows are formed because light travels in straight lines.
Shadow is always against, opposite side of light source.
Shadow is formed by opaque objects that stop high from propagating.
Things necessary for the formation of shadow: source of light,opaque object

VI. Answer the following questions in detail:

Question 1.
What are regular and irregular reflection? Explain with the help of diagrams
Answer:
(i) Regular reflection When a parallel beam of light on striking some smooth and polished surface is reflected as a parallel beam of light, such a reflection is called regular reflection.

(ii) Irregular reflection : When a parallel beam of light, on striking some rough surface, is reflected in different directions, then such a reflection is called irregular or diffused reflection.

Question 2.
What are the difference between luminous and non-luminous objects? Give two examples of each.
Answer:

Luminous objects

Non-luminous objects

All objects which emit light energy by themselves are called luminous objects.

All objects which do not emit light energy of their own, but reflect the light energy falling on them and hence, become visible are called non- luminous object.

Ex.: Sun, stars, torch light, burning candle etc.

Ex.: Metals, trees, houses, stones, moon etc.

Question 3.
Write about two everyday situations that tell you that light travels in a straight line.
Answer:

Formation of shadow: Shadows are formed when some light rays continue its travel in straight lines while other rays are stopped by an object.
When there is a small hole in a room, light travels only in a straight line.

Question 4.
Differentiate between a reflection and a shadow
Answer:

Reflection	Shadow
When light falls on a surface, the direction of ray is changed. This change in direction is known as reflection of light.	Shadow is an image formed by obstruction of light.
Eg.: You see your reflection in a pool of water or mirror.	Eg.: If you place your hand in front of a candle, you will see the image of the hand on the wall. This image will show only the outline of the object placed in front of the light source.

Question 5.
What are the characteristics of an image formed in a plane mirror?
Answer:

Image formed in a plane mirror is upright.
Image formed in a plane mirror is virtual The image is of the same size as the object
The distance of the image from the plane mirror is equal to the distance of the object from the mirror.
Image is laterally inverted.

Question 6.
Describe the picture

Answer:

When the tube is bent, we cannot see the source of light
When the tube is held straight we can see the flame. The two pictures verify that light travels in straight lines. This is known as rectilinear propagation of light.

Question 7.
Define the following terms
a. Incident ray
b. Reflected ray
c. Normal
d. Angle of incidence
Answer:
(a) Incident tavi The ray of light that falls on the surface of the reflection materials.
(b) Reflected ray: The ray of light that comes from the point when the incident ray falls on the reflection material.
(c) Normal: The perpendicular line drawn from, the point of incidence to the plane of reflecting surface is called normal.
(d) Angl e of incidence The angle formed between the incident ray PO and the normal ‘ON’ is angle of incidence.

Question 8.
Compare the images formed by plane mirror with that by pinhole camera
Answer:
Difference between the images formed in Pinhole camera and Plane mirror:

Image formed by Pin hole camera	Images formed in Plane mirror
The image is real.	The image is virtual
The image may not be equal to the size of the object	The image is equal to the size of the object
The image is inverted	The image is erect

Samacheer Kalvi 7th Science Light Intext Activities

Activity – 4

Let’s categorize transparent material, translucent material and opaque material among f the given materials
(Clear plastic ruler, cellophane paper, some water in a glass jar, tissue paper, drinking glass, beaker, tap water, kerosene, coconut oil, note paper, card board, milk, diluted milk, aluminum foil, thick colored plastic lid, rough glass piece, measuring glass with water, wooden piece) Place all the materials given above in the dark room. Focus a torch light on one side of each material. Inspect the light coming out at the other side of each material and then classify the materials in the table.

S.No	Transparent Material	Translucent Material	Opaque Material
1.	Clear plastic ruler	Kerosene	Card board
2.	Drinking glass	Milk	Wooden piece
3.	Beaker	diluted milk	aluminium foil
4.	Tap water	rough glass piece	thick coloured plastic lid.
5.	Measuring glass with water	tissue paper
6.	Cell phone paper	Note paper

Activity – 6

Surfaces	Property of Image (Clearer / blurred)
Glass	Blurred
Metal Sheet	Blurred
Aluminum foil	Clearer
Whitepaper	Clearer

Activity – 7

There are eight letters in the word EINSTEIN

Write the word in front of a plane mirror shown in diagram
Write down how these letters appear in the mirror
How many of these letters appear to be different, when the word is reflected?
Write down the letters that appear to be the same.

Answer:
(i)

(ii)

(iii) 3 letters (E,N,S)
(iv) I,T

Activity – 10
You need Gelatin papers of Red, Blue and Yellow. Fold each gelatin paper three times and look different colour objects listed below through each folded paper. Observe what colour each object has. Write your observations in the table.

Object	Original colour of object	Colour through Red gelatin paper	Colour through Blue gelatin paper	Colour through Yellow gelatin paper
Blue sky	Blue
Orange flower	Orange
Yellow banana	Yellow
leaves	Green
Brown trouser	Brown
White shirt	White	Red	Blue	Yellow
Black board	Black

Samacheer Kalvi 7th Science Light Additional Questions

I. Choose the correct answer.

Question 1.
Which of the following is a natural source of light?
(a) Electric lamp
(b) Electric filament
(c) Torch light
(d) Sunlight
Answer:
(d) Sunlight

Question 2.
Light shows ________
(a) curvilinear propagation
(b) random propagation
(c) rectilinear propagation
(d) none of these
Answer
(c) rectilinear propagation

Question 3.
Rectilinear propagation is ________
(a) mode of travelling in straight lines
(b) mode of travelling in curved lines
(c) ability to bend around obstacles
(d) displaying the phenomenon of diffraction
Answer
(a) made of travelling in straight lines

Question 4.
Plane mirrors are arranged parallel to each other to get ________
(a) a single image
(b) two images
(c) a large number of reflected image
(d) no image
Answer:
(d) two images

Question 5.
Which of the following is not luminous object?
(a) Sun
(b) Moon
(c) Candle
(d) Bulb
Answer
(b) Moon

Question 6.
White light is composed of ________
(a) seven colours
(b) five colours
(c) three colours
(d) only one colours
Answer:
(a) seven colours

Question 7.
The image which can be obtained on screen is called ________
(a) erect
(b) real
(c) virtual
(d) inverted
Answer:
(b) real

Question 8.
If we mix lights of the colours of the rainbow we will get .
(a) pink light
(b) brown light
(c) colourless light
(d) black light
Answer:
(c) colourless light

Question 9.
Which one of the following is involved for the formation of rainbow in the sky?
(a) Expansion of light
(b) Expansion of heat by the Sun
(c) Distance between the Earth and the Moon
(d) Dispersion of light
Answer:
(d) Dispersion of light

Question 10.
A virtual image is
(a) always real
(b) always uncapturable on a screen
(c) always inverted
(d) always caught on a screen
Answer:
(b) always uncapturable on a screen

II. Fill in the Blanks.

Objects which are able to emit light are known as ______
Passing electricity through certain gases at a very low pressure can produce ______
______ is a simple device which helps us to understand about the rectilinear propagation of light.
The light falling on the mirror is called ______ as and the light reflected is called
The angle formed between the reflected ray and the normal is ______
Light travels ______ km per second in air or vacuum.
Materials that allow light to pass through completely are known as ______ material.
Materials that allow light to pass through partially are called ______ materials.
Materials that are not able to allow light to pass through it are called ______ materials.
______ is always against, opposite side of light source.
The ______ is the darkest part of a shadow.
The lighter shade of shadow is the ______
Only ______ objects forms shadows.
______ eclipse occurs, when the moon arrives between the sun and the Earth.
______ cables are able to carry more signals than traditional copper cable telephone lines.
The images that are obtained on a screen are called ______ and that which cannot be obtained on a screen is ______
When all colours of visible light strikes the retina of our eye at the same time, our brain perceives ______
______ colour is scattered the least by air molecules.
______ is the method of creating colour by mixing various proportion of two or three distinct colours of light.
______ Magenta, Cyan and yellow are called colours.

Answer:

light sources
Light
Pin-hole camera
incident ray, reflected ray
angle of reflection
3 lakh
transparent
translucent
opaque
Shadow
umbra
penumbra
opaque
Solar
Fibre optic
real image, virtual image
white
Red
Synthesis
secondary

III. True or False – If false give the correct statement.

Question 1.
Angle of incidence is greater than the angle of reflection.
Answer:
False
Correct statement: Angle of incidence is o the angle of reflection.

Question 2.
The image formed by a plane mirror is real.
Answer:
False.
Correct statement: The image formed by a plane mirror is virt ual and erect.

Question 3.
Diffused reflection gives a sharp image.
Answer:
False.
Correct statement: reflection gives a sharp image.

Question 4.
The image formed by a plane mirror is always that far behind the mirror as far the object lies in front of it.
True.
You can see a rainbow only when your back is towards the sun.
True.

Question 5.
You can see a rainbow only when your back is towards the sun.
Answer:
True.

Question 6.
The image of symmetrical letters like A, H, I, M, R, K, T, U are not affected by lateral inversion.
Answer:
Correct statement: The image of symmetrical letters like A, H, I, M, T, U are not affected by lateral inversion.

Question 7.
Plane mirrors are used as looking glass, to reflect light on objects and in periscopes.
Answer:
True

Question 8.
We can not get white light when we mix seven colours.
False
Correct statement: We can get white light when we mix seven colours.

Question 9.
Materials that allow light to pass through completely are known as transparent material
Answer:
True

Question 10.
Solar and lunar eclipses are occuring due to the property of light known as the rectilinear propagation of light.
Answer:
True

IV. Match the following :

Question 1.

1.	Rubber	(a)	Erect
2.	Greased paper	(b)	Inverted
3,	Real image	(c)	Opaque medium
4.	Virtual image	(d)	Translucent medium

Answer:

Question 2.

1.	Real image	(a)	Diffuse reflection
2.	Virtual image	(b)	An optical device which produces reflection
3.	Mirror	(c)	Cannot be taken on screen
4.	A type of light scattering	(d)	Can be taken on screen

Answer:

V. Assertion and Reason.

Mark the correct choice as
(a) Both A and R are true and R is the correct explanation of assertion.
(b) Both A and R are true but R is not the correct explanation of assertion.
(c) A is true but R is false.
(d) A is false but R is true.

Question 1.
Assertion (A) : A plane mirror produces virtual, erect image for any position of the object.
Reason (R) : Lateral inversion is an important property of image formed by a plane mirror.
Answer:
(b) Both A and R are true but R is not the correct explanation of assertion.
Correct reason: It is because of the property of image formed in a plane mirror.

Question 2.
Assertion (A) : When an object is placed between two plane mirrors; then all the images
found are of unequal intensity.
Reason (R) : In case of plane parallel mirrors, only two images are possible.
Answer:
(c) A is true but R is false
Correct reason: In case of plane parallel mirrors, infinite images are formed.

Question 3.
Assertion (A) : Virtual object can’t be seen by human eye.
Reason (R) : Virtual image is formed by converging rays.
Answer:
(c) A is true but R is false
Correct reason: Virtual image is formed by diverging rays.

Question 4.
Assertion (A) : A ray incident along normal to the mirror retraces its path.
Reason (R) : In reflection, angle of incidence is always equal to angle of reflection.
Answer:
(a) Both A and R are true and R is the correct explanation of assertion

VI. Very short Answers:

Question 1.
What is the composition of sunlight?
Answer:
Sunlight is a mixture of seven colours.

Question 2.
How does light travel?
Answer:
Light travels along a straight line.

Question 3.
What kind of surface reflects light?
Answer:
Smooth and shiny surface reflects light.

Question 4.
Name the triangular piece of glass that splits white light into different colours.
Answer:
Prism.

Question 5.
What is reflection of light?
Answer:
When light falls on smooth surface like mirror then it changes its direction, it is called reflection.

Question 6.
State the size of the image formed by a plane mirror?
Answer:
The size of image formed by a plane mirror is same as that of the object infront of the mirror.

Question 7.
What is Newton’s disc?
Answer:
Newton Disc is a card board disc with seven equal sectors colored red, yellow, orange, green, blue, indigo and violet. When the disc turned quickly, the retina receives the sensation of the spectrum simultaneously and disc appears white.

Question 8.
What is an eclipse?
Answer:
An eclipse is an incident, when any astronomical object is partially or fully obscured due to the placement of another astronomical object in the presence of light.

Question 9.
What is light?
Answer:
Light is type of energy, that helps us to see all the things around us.

VII. Short Answer.

Question 1.
What is natural sources of light? Give example.
Answer:
Sources which emit light naturally are known as natural sources of light. The Sun is the primary and the major source of natural light.

Question 2.
Mention the properties of light.
Answer:
Light has some fundamental properties as mentioned below.

Rectilinear propagation of light
Reflection
Speed
Interaction of light with matter.

Types of material according to permeability.
Formation of shadows.
Plane mirror and images.
Spectrum.

Question 3.
State laws of reflection.
Answer:
Laws of reflection:

The angle of incidence is always equal to the angle of reflection. \(\lfloor i\) = \(\lfloor r\)
The incident ray, the reflected ray and the normal at the point of incidence lie on the same plane.

Question 4.
Define transparent materials. Give example.
Answer:

Materials that allow light to pass through completely are known as transparent material.
Example: Eye glasses, clear drinking glass, clear water, face glasses used in buses.

Question 5.
Define opaque material. Give example.
Answer:

Materials that are not able to allow light to pass through, are called opaque material.
Example: Wall, thick card board, stone, etc.

Question 6.
What is lunar eclipse?
Answer:

Lunar eclipse occurs, when the Earth (E) comes between the Sun (S) and the Moon (M).
The Earth prevents light coming from the Sun and makes shadow on the Moon. This is lunar eclipse.

Question 7.
Why danger lights in vehicles are red in colour?
Answer:

Red color is scattered the least by air molecules.
Red color has the highest wavelength of all the other colors. So red color is able to travel the longest distance through air, fog.

Question 8.
What is meant by synthesis of colour?

Synthesis of colour is the method of creating colour by mixing various proportion of two (or) three distinct colours of light. .
These distinct colours are Red, Green and Blue called as primary colours.

Question 9.
When lighting a bulbs in a dark room, light spreads the whole room quickly. Give reason.
Answer:

When lighting a bulb in a dark room, light spreads the whole room quickly.
This is because the light travels very fast.
Light travels three lakh kilometers per second in air or vacuum.
In theory, nothing can travel faster than light.

VIII. Long Answer:

Question 1.
Write the difference between real image and virtual image.
Answer:

	Real image	Virtual image
1.	It can be taken on a screen.	It cannot be taken on a screen.
2.	The rays of light, after reflection	The rays of light, after reflection appear to
3.	It is always inverted	It is always erect but laterally inverted

Question 2.
Explain the importance of optical fiber.
Answer:

Optical fiber is a device that works on the principle of total internal reflection by which light signals (huge data) can be transmitted from one place to another place with a negligible loss of energy in a very short time.
It consists of a cable having one or more thin flexible fibers with a glass core through which light signals can be sent.
Optical fiber can be twisted and bent easily.
When a light a ray of light is incident at one end of the core of optical fiber, it suffers total internal reflection at the many places inside the fiber and emerges at the other end with negligible loss of energy.
The data or information in the form of pulses of light, can be sent through bundles of optical fibers.
Optical fibers have become very important in high-speed communications, such as cable TV and high-speed broadband services.Fiber optic cables are able to carry more signals than traditional copper cable telephone lines.

Question 3.
With help of a diagram, write a note on : a. Solar eclipse, b. Lunar eclipse.
Answer:
(a) Solar eclipse

Solar eclipse occurs, when the Moon arrives between the Sun (S) and the Earth(E). The shadow of the Moon appears on the Earth at A as shown in picture. Hence, those who are at the region A are unable to see the Sun instantly. This is solar eclipse. But, those who are at the region B and C are able to see the sun partially.
(b) Lunar eclipse

Lunar eclipse: Lunar eclipse occurs, when the Earth (E) comes between the Sun (S) and the Moon (M). The Earth prevents light coming from the Sun and makes shadow on the Moon. This is lunar eclipse

IX. Problems for practice:

Question 1.
Calculate the number of images formed by plane mirrors kept at an angle of 10° to each others.
Solution:
Number of image n = \(\frac { 360° }{ θ}\) – 1 = \(\frac { 360° }{ 10°}\) – 1
= 36 – 1
= 35 images

Question 2.
A ray of light fall on a plane surface at an angle of incidence 9° and reflection occurs. Calculate the angle of reflection in degree.
Solution:
By first law of reflection, angle of incidence is always equal to angle of reflection.
\(\lfloor i\) = \(\lfloor r\) . Here, angle of incidence is 9°. So angle of reflection must be equal to 9°.

Question 3.
A plane mirror forms a virtual image. The distance between Maria and her image in a plane mirror is 10 m. How much distance should she move in order to get the distance of 5 m between herself and her image?
Solution:

The distance between Maria and her image in a plane mirror = 10 m

So, she shouuld move a distance of 2.5 m toward the plane mirror

X. Higher order thinking skill (HOTS) :

Question 1.
Why are we able to see the tap water in a glass even though it is colourless?
Answer:
Top water reflects the light into our eyes. As long as an object reflects light into our eyes, we can see it.

Question 2.
Imagine that parallel rays are incident on an irregular surface. Are the rays reflected from this surface parallel to each other?
Answer:
No, the reflected rays from irregular surface are in different directions.

Question 3.
Ram planned an activity to observe an object through pipes as shown in figure, so that he could see objects which he could not directly see.

(a) Mention how many mirrors should he use to see the objects.
(b) If any of the mirrors is removed, will he be able to see the objects?
(c) Indicate the positions of the mirrors in the figure.
Answer:
(a) Number of mirrors = 3
(b) He will not be able to see the objects if any of the mirror is removed, since he will not get the rays after removal of mirror.

Samacheer Kalvi 7th Science Solutions Term 3 Chapter 4 Chemistry in Daily Life

Leave a Comment / Class 7 / By Bhagya

Students can Download Science Chapter 4 Chemistry in Daily Life Questions and Answers, Notes Pdf, Samacheer Kalvi 7th Science Book Solutions Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 7th Science Solutions Term 3 Chapter 4 Chemistry in Daily Life

Samacheer Kalvi 7th Science Chemistry in Daily Life Textual Evaluation

I. Choose the correct answers :

Question 1.
A drug effective in the treatment of pneumonia, and bronchitis, is ______
(a) Streptomycin
(b) Chloramphenicol
(c) Penicillin
(d) Sulphaguanidine
Answer:
(c) Penicillin

Question 2.
Aspirin is ______
(a) Antibiotic
(b) Antipyretic
(c) Sedative
(d) Psychedelic
Answer:
(b) Antipyretic

Question 3.
______ are that neutralize stomach acid.
(a) Antacid
(b) Antipyretic
(c) Analgesic
(d) Antihistanics
Answer:
(a) Antacid

Question 4.
The lowest temperature at which a substance catch the fire is called its ______
(a) Boiling point
(b) Melting point
(c) Critical temperature
(d) Ignition temperature
Answer:
(d) Ignition temperature

Question 5.
Which is the hottest part in the flame of candle ______
(a) Blue
(b) Yellow
(c) Black
(d) Way part
Answer:
(a) Blue

II. Fill in the blanks :

Penicillin was first discovered by ______
World ORS Day is ______
Combustion is a chemical reaction in which and substance react with ______
In the presence of water, the ignition temperature of paper is ______
Fire produced by oil cannot be controlled by ______

Answer:

Alexander Fleming
July 29
oxidizing agent
not reached
water

III. True or False – If False, give the correct answer :

Question 1.
Antibiotics does work for viruses like cold and
Answer:
(False)
Correct statement: Antibiotics does not work for viruses like cold and flu

Question 2.
Analgesics are the substances that lower the temperature during fever.
Answer:
(False)
Correct statement : Antipyretic are the substances that lower the temperature during fever.

Question 3.
All fuels form flame.
Answer:
(False)
Correct statement: All fuels do not form flame.

Question 4.
Oxygen is necessary for combustion.
Answer:
True

Question 5.
Burning wood and coal causes pollution of air.
Answer:
True

IV. Match the following :

Question 1.

1. Antipyretic	Reduce pain
2. Analgesic	Reduce body temperature
3. Antacid	Spontaneous combustion
4. Phosphorus	ORS Solution
5. Carbon – di – oxide	Leads to respiratory problem

Answer:

1. Antipyretic	Reduce body temperature
2. Analgesic	Reduce pain
3. Antacid	ORS Solution
4. Phosphorus	Spontaneous combustion
5. Carbon – di – oxide	Leads to respiratory problem.

V. Analogy:

Question 1.
Inner zone of flame:: ______, outer zone of flame : : ________
Anwer:
Black, Blue

Question 2.
Tincture:: ______, Histamine : : _______
Answer:
Antiseptic, Chemical messenger

VI. Very short answer :

Question 1.
First viral disease detected in human being was : _____ (Yellow fever / dengue fever)
Answer:
Yellow fever.

Question 2.
______,:_______,:_______ are called green house gases
Answer:
CO₂, Methane, Chlorofluorocarbons

Question 3.
Name a substance which can be used as an antiseptic as well as disinfectant.
Answer:
Garlic, Turmeric, Aloe vera.

Question 4.
What are the main constituents of dettol?
Answer:
Mixture of chloroxylenol and terpincol

Question 5.
Name the unit in which the calorific value of a fuel is expressed.
Answer:
KJ/Kg.

Question 6.
How many types of combustion are there?
Answer:

Rapid combustion
Spontaneous combustion
Explosion

Question 7.
What are the essential requirements for producing fire?
Answer:
Fuel, Heat and Oxygen.

VII. Short Answer Questions:

Question 1.
Why should not medicines be taken without consulting doctors?
Answer:
One should not take medicines without consulting doctors because if a wrong medicine is accidently eaten for a disease, it may not cure the disease but actually can have harmful side effects to the body.

Question 2.
Why do antiseptics differ from disinfectants? Give one example of each.
Answer:
Difference between Antiseptic and Disinfectants

	Antiseptic	Disinfectants
1.	All antiseptic are disinfectants	1. All disinfectants are not antiseptic
2.	It can be applied on the live tissue	2. It can be apply on in animate object
3.	E.g. skin / Mucous	3. E.g. Surface, lab working tables, floor.

Question 3.
What is ignition temperature?
Answer:
The minimum temperature at which a substance catches fire and burns is called its ignition temperature..

Question 4.
If 4.5kg of fuel is completely burnt and amount of heat produced stands measured at 1,80,000 KJ. What is the calorific value?
Answer:
Amount of fuel = 4.5 kg
Heat produced = 1,80,000 kj
Calorific value = ?
Solution:

∴ Calorific value = 40,000 kj/kg

VIII. Answer in Detail:

Question 1.
Explain briefly about antibiotic and analgesic.
Answer:

Many micro organisms and plants synthesize chemicals which are toxic in nature to protect them from invading organisms.
Those biosynthesized chemicals can be isolated from the plants/micro organisms and was used as medicines against infectious diseases, these substances were called as antibiotics.
Ex: Chloramphenicols, tetracyclines, Penicillin derivatives, cephalosporin’s and their derivatives.
The world’s first antibiotic penicillin was discovered by Dr. Alexander Fleming.

Analgesics:

Analgesics or pain killers that react like the pain-suppressing chemicals released by the body.
They suppress the feeling of ‘pain.
This analgesics drug selectively relieves pain by acting either in CNS (Central Nerves System) or on peripheral pain mechanism, without significantly altering consciousness.

Question 2.
Make labeled diagram of a candle flame.
Answer:

IX. Picture based question

Question 1.
Arul and Aakash were doing an experiment in which water was to be heated in a beaker. Arul kept the beaker near the wick in the yellow part of candle flame. Aakash kept the beaker in the outer most part to the flame. Whose water will get heated in a shorter time?

Answer:
The water heated by Akash will get heated in a shorter time because he kept his beaker near the hottest (non- luminous) zone of the flame. But Arul kept the beaker in the luminous zone which is moderately hot. So, it will take longer time.

Samacheer Kalvi 7th Science Chemistry in Daily Life Intext Activities

Activity

Question 1.
What happens when you add with these chemicals?
Sugar + Potassium permanganate + Glycerin

Answer:

After adding sugar, potassium permanganate and glycerin to the dish, immediately step back because spark and solid potassium permanganate will be expelled from the dish.
When potassium permanganate mixes with glycerin, a redox reaction starts. This reaction starts out really slow, but produces a lot of heat, so it will start to speed up bit by bit. As the potassium permanganate oxidises the sugar, it will speed up more and more until it finally starts to smoke and after that it will ignite.

Samacheer Kalvi 7th Science Chemistry in Daily Life Additional Questions

I. Choose the correct answer.

Question 1.
is a special combination of dry salt that is mixed with safe water.
(a) PRS
(b) ORS
(c) SOR
(d) ROS
Answer:
(b) ORS

Question 2.
Which of the following conditions is not necessary for combustion?
(a) Oxygen
(b) Adequate ignition temperature
(c) Combustible substance
(d) High calorific value
Answer:
(d) High calorific value

Question 3.
During diarrhoea the intestine is still able to absorb molecules.
(a) glucose
(b) sodium
(c) citrate
(d) none
Answer:
(a) glucose

Question 4.
Antacids are actually .
(a) weak acids
(b) weak bases
(c) strong acids
(d) strong bases
Answer:
(b) weak bases

Question 5.
Our stomach naturally produce to help digest and breakdown food.
(a) Sulphuric acid
(b) acetic acid
(c) hydrochloric acid
(d) none of these
Answer:
(c) hydrochloric acid

Question 6.
_______ are substances applied to the exterior of a body that kill microbes.
(a) Antiseptics
(b) Antihistamine
(c) Antipyretic
(d) ORS
Answer:
(a) Antiseptics

Question 7.
All combustion reactions are .
(a) endothermic
(b) exothermic
(c) both a and b
(d) None of these
Answer:
(b) exothermic

Question 8.
Any reaction that involves reaction with oxygen is called reaction.
(a) reduction
(b) ignition
(c) oxidation
(d) none
Answer:
(c) oxidation

Question 9.
Which is the luminous part of the plame?
(a) Outer zone
(b) Middle zone
(c) Inner zone
(d) None
Answer:
(b) middle zone

II. Fill in the Blanks.

The chemical process in which a substance reacts with oxygen to produce heat is called _________
Substances which vapourise during burning produce _________
_________ is one that neutralize stomach acid
_________ is a chemical messenger involved in number of complex biological reactions.
_________ are used to treat the disease and to improve our health.
Once infection is sensed, the immune system releases a chemical called _________
Sensing the pyrogens, hypothalamus increases the body temperature by releasing a chemical _________
_________ that react like the pain – suppressing chemicals released by the body.
_________ resistane is defined as the ability of the microorganisms to resist the effects of an antibiotic to which they were once sensitive.
The process of osmosis, the salts and sugars pull water into your bloodstream and speed up _________

Answer:

Combustion
flames
Antacid
Histamine
Medicines
pyrogen
prostaglandin
Analgesics
Antibiotic
rehydration

III. True or False – if false, give the correct statement.

Question 1.
If there is inadequate salt in the intestinal wall, the body will not be able to absorb water.
Answer:
True

Question 2.
Acidity issues arise when there is excess production of acetic acid due to triggers.
Answer:
Correct statement : Acidity issues arise when there is excess production of due to triggers.

Question 3.
The lining of our stomach with a pH of 4 to 6 is designed as such to withstand a high acidic environment.
Answer:
False
Correct statement: The lining of our stomach with a pH of 1 to 3 is designed as such to withstand a high acidic environment.

Question 4.
The bacteria staphylococcus is meant to cause deadly diseases such as pneumonia sour throat etc.
Answer:
True

Question 5.
Fleming named the mould penicillum notatum, from which the antibiotic penicillin was isolated.
Answer:
True

Question 6.
Paracetamol interact with the receptors and reduce the intensity of pain signals to the brain.
Answer:
True

Question 7.
Bacteria and virus can thrive above a certain temperature.
Answer:
Correct statement: Bacteria and virus thrive above a certain temperature.

Question 8.
The adverse effects of antihistamines are mouth dryness and sleepiness.
Answer:
True

Question 9.
Complete combustion of the fuel takes place and the colour of the flame is yellow and is the hottest part of the flame.
Answer:
False
Correct statement: Complete combustion of the fuel takes place and the colour of the flame is blue and is the hottest part of the flame.

IV. Match the following :

Question 1.

1.	White flame	(a)	Table salt
2.	Indigo flame	(b)	Bleaching powder
3.	Blue flame	(c)	Potassium chloride
4.	Orange flame	(d)	Epsom salt

Answer:

Question 2.

1.	Inner zone	(a)	Yellow
2.	Outer zone	(b)	Borax powder
3.	Middle zone	(c)	Blue
4.	Green flame	(d)	Black

Answer:

V. Very short Answers:

Question 1.
What is antipyretics?
Answer:

Antipyretics (anti – against and pyretic – feverish) are chemical substances that reduce fever.
They suppress the release of prostaglandin and reduce fever.

Question 2.
What is antiseptics?
Answer:
Antiseptics are substances applied to the exterior of a body that kill or inhibit microbes and infective agents.

Question 3.
Name few natural antiseptics.
Answer:

Garlic
Turmeric
Aloevera.

Question 4.
Define histamine.
Answer:
Histamine is a chemical messenger involved in number of complex biological reactions.

Question 5.
Complete the oxidation reaction.
Answer:
CH₄ + 2O₂ → ______ + ______ + Heat energy
CO₂ + 2H₂O

Question 6.
Name a few substances which produce flames on burning.
Answer:
Wax, Kerosene.

Question 7.
Give one example for spontaneous combustion.
Answer:
Phosphorous burns spontaneously at room temperature.

Question 8.
Give one example for slow combustion.
Answer:
Respiration.

Question 9.
What are the classes of fire?
Answer:
There are 5 classes of fire.

Class A
Class B
Class C
Class D
Class D.

Question 10.
Give example for class B fires.
Answer:
Petrol, turpentine or paint.

VI. Short Answer.

Question 1.
Mention some of the common antacids.
Answer:

Sodium bicarbonate (NaHC03)
Calcium carbonate (CaC03)
Magnesium Hydroxide (MgOH)2
Magnesium carbonate (MgCOs)
Aluminium Hydroxide Al (OH)3

Question 2.
What is antibiotic resistance?
Answer:
Antibiotic resistance is defined as the ability of the microorganisms to resist the effects of an antibiotic to which they were once sensitive.

Question 3.
What is fever?
Answer:
In normal course, our body temperature is one degree below or one degree above 98.6 degrees Fahrenheit. When the temperature goes above this level it is called fever.

Question 4.
Mention the ways to intake the medicine.
Answer:

Oral use
External use
Injections (Intramuscular/Intra venous).

Question 5.
What do you mean by inflammable substance?
Answer:

Substances which have very low ignition temperature and can easily catch fire with a flame are called inflammable substances.
E.g. Petrol. Alcohol, LPG (Liquefied Petroleum Gas), CNG (Compressed Natural Gas), etc.

Question 6.
Write a note on flame.
Answer:

Flame is actually a chemical reaction.
To be specific, the flame is a mixture of gases (vaporized fuel, oxygen, carbon dioxide, carbon monoxide, water vapor, and many volatile materials) and so is matter.
The light and heat produced by the flame is energy, not matter. But fire is a matter.

Question 7.
What is slow combustion? Give example.
Answer:
Slow combustion is a form of combustion which takes place at low temperatures. Respiration is an example of slow combustion.

Question 8.
Mention the conditions necessary for producing fire.
Answer:
The conditions necessary for producing fire are,

Fuel
Air (to supply oxygen)
Heat (to raise the temperature of the fuel beyond its ignition temperature)

Question 9.
Mention the most common types of fire extinguishers.
Answer:

Air pressurized water extinguishers
Carbon-di-oxide extinguishers
Dry chemical powder extinguishers.

VII. Long Answer

Question 1.
Explain the structure of a candle flame.
Answer:
A candle flame has three main zones, they are

The outer zone – complete combustion of the fuel takes place and the colour of the flame is blue and is the hottest part of the flame. It is the non-luminous part of the flame.
The middle zone – partial combustions of the fuel takes place and the colour of the flame is yellow and is moderately hot part of the flame. It is the luminous part of the flame.
The inner zone – There are unburnt vapours of the fuel and the colour is black and is least hot part.

Question 2.
Write the characteristics of a good fuel.
Answer:

Readily available
Cheap
Easy transport and store
Burns at moderate rate
Produce large amount of heat
Do not leave behind any undesirable substances.
Does not cause pollution.

Question 3.
How do fire extinguishers work? Explain.
Answer:

Portable fire extinguishers apply an extinguishing agent that will either cool burning fuel, displace or remove oxygen, or stop the chemical reaction so fire cannot continue to burn.
When the candle of an extinguisher is compressed, it opens and inner canister of high pressure gases forces the extinguishing agent from the main cylinder through a siphon tube and out the nozzle.
A fire extinguisher works much like a can of hair spray.

VIII. HOTS:

Question 1.
Why a person is covered with a blanket when the clothes of that person catch fire?
Answer:
When the clothes of a person catch fire, the person is covered with a blanket to extinguish
the fire. This is because the supply of air to the burning clothes is cut off by blanket, due to this the clothes stop burning and the fire gets extinguished.

Question 2.
Why is the candle flame straight?
Answer:
A candle flame is caused by vapour burning above the candle. This burning vapour is hotter than the surrounding air and is therefore less dense. So, by the principle of convection, it “rises” so the flame is always upwards

Samacheer Kalvi 7th English Solutions Term 3 Supplementary Chapter 2 Man Overboard

Leave a Comment / Class 7 / By Bhagya

Students can Download English Lesson 2 Man Overboard Questions and Answers, Summary, Notes Pdf, Activity, Samacheer Kalvi 7th English Book Solutions Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 7th English Solutions Term 3 Supplementary Chapter 2 Man Overboard

Read And Understand

A. Complete the following statements.

Question 1.
Everyone in the ship started to pray because -___________
Answer:
They received a message that a storm was blowing up

Question 2.
Vasanthas imagination ran wild because -___________
Answer:
she remembered her class teacher telling about a big storm

Question 3.
Vasantha made a lot of noise because -___________
Answer:
She saw a man overboard

Question 4.
Vasantha could not see the rescue operation because -___________
Answer:
the boat was too far for her to see what was happening

Question 5.
The captain presented a gift to Vasantha because -___________
Answer:
She sprang into the action and helped in saving the man overboard

B. Identify the speaker/character.

Don’t worry, Madam, it’s only a warning.
A man fell into the sea. Please save him.
Stop ship. Drop anchor. Quick!
He’ll have to be given artificial respiration and kept warm.
Wake up, child.

Answer:

A gentleman
Vasantha
Captain of the ship
The doctor
A sailor

C. Book Talk!
Read the story once again and fill in the boxes.

Beginning: Vasantha was on board a ship called S.S. Rajula. She was travelling to Singapore after her stay with her grandparents.

Middle: Due to a strong wind, the ship rocked to and fro. Huge waves were dashing against it. A man on board tumbled over the railings into the wild sea. Vasantha shouted for help. The rescue officers saved him and he was sent for immediate medical care.

End: The man was saved. The captain of the ship was pleased and presented her a model of a ship. Vasantha was the happiest person on board that day.

When: She boarded a ship called S.S. Rajula which was going to Singapore.

Where: At Madras Harbour.

Vasantha: Vasantha, a young girl.
Captain: Captain Lindsay, Captain of the ship ‘S.S. Rajula’.
Others:

A person standing next to Vasantha.
An old lady.
A gentleman.
Another lady was sitting beside Vasantha.
A man who fell into the sea.
Two sailors saved him.
The ship’s doctor.
Two nurses.
Rescue team.

Describe the problem in the story :
When a huge wave lashed the ship, a man tumbled over the railings into the wild sea.

Describe the solution :
Vasantha alerted everyone to save the man. The Rescue team struggled and the two sailors dragged the man to the ship. Immediate medical care was given to him.

Write the part you enjoyed the most :
Vasantha’s immediate action in alerting the members of the ship to save the man.

Connecting To Self

D. Read the incidents. Work in small groups to role-play the situations in which they showed their presence of mind. Each group should perform the skit for the rest of the class. Share similar situations in the class.
Answer:
Activity to be done by the students

Project

E. Look at the picture. Browse the internet with the help of your teacher to get information about the little brave hearts of India.
Search for similar brave hearts in your locality.
Scan the QR. Download the nomination form for National Bravery Award. Read the instructions and fill the nomination for NBA.
Brave Hearts of India

Answer:
Activity to be done by the students.

Step To Success

F. In each question below, there is a sentence in which some parts have been jumbled up, Rearrange these parts which are labelled P, Q, R, and S to produce the correct sentence. Choose the proper sequence.

Question 1.
When he
P: did not know
Q: he was nervous and
R: heard the hue and cry at midnight
S: what to do
(a) RQPS
(b) QSPR
(c) SQPR
(d) PQRS
Answer:
(d) PQRS

Question 2.
They felt safer
P: to watch the mountain
Q: of more than five miles
R: as they settled down
S: from a distance
(a) RPSQ
(b) RSQP
(c) PQRS
(d) PRSQ
Answer:
(b) RSQP

Question 3.
If you need help
P: promptly and politely
Q: ask for attendants
R: to help our customers
S: who have instructions
(a) SQPR
(b) QPSR
(c) QSRP
(d) SQRP
Answer:
(c) QSRP

Question 4.
He knew that
P: and then to save himself
Q: was to save all the lives
R: entrusted to his care
S: the duty of a captain
(a)PQRS
(b) SQRP
(c) SPRQ
(d) QSRP
Answer:
(b) SQRP

Question 5.
With her body
P : dragging her unwilling feet
Q : weak and infirm
R : doubled with age
S : she persisted in her mission
(a) PQRS
(b) QPRS
(c) RQPS
(d) SRPQ
Answer:
(a) PQRS

Man Overboard Additional Questions

I. Choose the Correct Answers (MCQ).

Question 1.
I was _________ to be on board the ship.
(a) bored
(b) sad
(c) thrilled
(d) shocked
Answer:
(c) thrilled

Question 2.
Uncle, I am going back to my parents in _________
(a) London
(b) Malaysia
(c) Australia
(d) Singapore
Answer:
(d) Singapore

Question 3.
I request all of you to keep _________
(a) calm
(b) silent
(c) quiet
(d) Shouting
Answer:
(a) calm

Question 4.
There _________ was everywhere.
(a) sorrow
(b) happiness
(c) energy
(d) Panic
Answer:
(d) Panic

Question 5.
‘A ‘ _________ sea will be the end of me!’
(a) rough
(b) calm
(c) wild
(d) roaring
Answer:
(a) rough

Question 6.
This made my imagination run _________
(a) mad
(b) wild
(c) Strength
(d) deep
Answer:
(b) wild

Question 7.
Even the heavy pianos in the _________ went crashing against the wall
(a) hall
(b) room
(c) lounge
(d) dining room
Answer:
(c) lounge

Question 8.
_________ waves were dashing against the ship
(a) High
(b) Huge
(c) Big
(d) mild
Answer:
(b) Huge

Question 9.
People started crowding the _________
(a) deck
(b) board
(c) kitchen
(d) Lounge
Answer:
(a) deck

Question 10.
I borrowed the captain’s _________
(a) glasses
(b) binoculars
(c) book
(d) gloves
Answer:
(b) binoculars

II. Identify the Character / Speaker.

Question 1.
“What’s your name?”
Answer:
A person on board

Question 2.
“I request all of you to keep calm.”
Answer:
The capital of the ship

Question 3.
“I’ll call you afterward,”
Answer:
The capital of the ship

Question 4.
“There was a big storm near Gibraltar.”
Answer:
Vasantha class teacher

Question 5.
“Good Morning, Uncle, isn’t it lovely?”
Answer:
Vasantha

Question 6.
“Can I be of any help?”
Answer:
Vasantha

Question 7.
“What’s the matter? Why are you making, so much noise?”
Answer:
The capital of the ship

Question 8.
“You’re hurting me, Sir.”
Vasantha

Question 9.
“Aye, aye, captain.”
Answer:
The Ship’s doctor

Question 10.
Wake up, child. You’re Vasantha, aren’t you?”
Answer:
A sailor

III. Write True or False against each statement.

Vasantha’s class teacher was a Tamilian.
A man was vomiting over the rails of the ship.
The name of the captain was S.S. Rajula.
Vasantha was very much afraid of the storm.
An old lady said that her only son was waiting for her in Singapore

Answer:

False
True
False
False
True

IV. Very Short Questions with Answers.

Question 1.
Who stood on the deck of S.S. Rajula?
Answer:
Vasantha stood on the deck of S.S. Rajula.

Question 2.
Whom did Vasantha wave to?
Answer:
Vasantha waved to her grandparents.

Question 3.
How did Vasantha spend the day in the ship?
Answer:
Vasantha spent the day exploring the ship.

Question 4.
Was Vasantha thrilled about the upcoming storm?
Answer:
Yes, she was thrilled when she got the news about the storm.

Question 5.
Who was Vasantha’s class teacher?
Answer:
Vasantha’s class teacher was an English woman.

Question 6.
Did the storm break in the evening?
Answer:
No, the storm did not break in the evening.

Question 7.
How many life-boats moved towards the man who fell into the sea?
Answer:
Two lifeboats moved towards the man who fell into the sea.

Question 8.
How was the captain of the ship watching the rescue operations?
Answer:
The captain was watching the rescue operations through a pair of binoculars.

Question 9.
Who was waiting at the railings for the rescued man?
Answer:
The ship’s doctor, with two nurses, was waiting for the rescued man.

Question 10.
What was inscribed on the model of the ship given as a present to Vasantha?
Answer:
“B.I.S.N. & Co. S.S. RAJULA” was inscribed on the model of the ship.

V. Short Questions with Answers.

Question 1.
What was there inside the ship?
Answer:
There were furnished rooms, a swimming pool, a room for indoor games, and a library.

Question 2.
What did the captain of the ship inform the passengers the next day?
Answer:
The captain informed the passengers that they had received a message that a storm was likely to form in the Indian Ocean.

Question 3.
Why did the old lady pray aloud?
Answer:
An old lady prayed aloud to have mercy on all of them. Her son was waiting for her in Singapore.

Question 4.
What did her class teacher tell her students one day?
Answer:
Her class teacher told them that she was crossing the English Channel on her way to Singapore. Then there was a big storm near Gibraltar. Their ship rocked to and fro. Everything in the cabins rolled up and down. Even the heavy pianos went crashing against the walls.

Question 5.
What was the man doing at the railings?
Answer:
The man was almost vomiting over the rails. He looked rather blue about the mouth.

VI. Paragraph Question with Answer.

Question 1.
What was the present given to Vasantha by the captain? How did Vasantha feel about this?
Answer:
The captain gave a big brown box to Vasantha, appreciating her sense of immediate action. She opened the box. On a velvet backing, was the most beautiful model of a ship. On it, was inscribed the letters “B.I.S.N. & Co. S.S. RAJULA.” Vasantha felt very happy. She threw her hands around the captain, hugged and [ kissed him. He patted her cheek and went away. Vasantha proudly showed her present to everyone she met. She was the happiest person on board that day.

VII. Rearrange the fumbled Sentences.

A.
1. The ship slowly moved out of Madras harbour.
2. It was a new experience for me.
3. I was thrilled to be onboard a ship.
4. I waved to my grandparents till I could see them no more.
5. I stood on the deck of S. S. Rajula.
Answer:
5. I stood on the deck of S. S. Rajula.
1. The ship slowly moved out of Madras harbour.
4. I waved to my grandparents till I could see them no more.
3. I was thrilled to be onboard a ship.
2. It was a new experience for me.

B.
1. Huge waves were dashing against it.
2. The storm didn’t break.
3. Even though the deck was slippery, I was running around.
4. But in the evening, a strong wind started blowing.
5. The ship rocked to and fro, rocking and rolling to the music of the wind.
Answer:
2. The storm didn’t break.
4. But in the evening, a strong wind started blowing.
5. The ship rocked to and fro, rocking and rolling to the music of the wind.
1. Huge waves were dashing against it.
3. Even though the deck was slippery, I was running around.

C.
1. The crew in the rescue boats threw a strong rope to the two sailors in the sea and shouted ‘catch’.
2. I borrowed the captain’s binoculars.
3. Then, with powerful strokes, they swam towards uncle.
4. Both of them were good swimmers and soon had caught hold of the rope.
5. Now I could see the rescue operation clearly.
Answer:
2. I borrowed the captain’s binoculars.
5. Now I could see the rescue operation clearly.
1. The crew in the rescue boats threw a strong rope to the two sailors in the sea and, shouted catch’.
4. Both of them were good swimmers and soon had caught hold of the rope.
3. Then, with powerful strokes, they swam towards uncle.

VIII. Read the passage and answer the questions.

A.
The next morning the passengers were seated in the dining hall, having breakfast. The loudspeaker spluttered noisily and then the captain’s voice came loud and clear. “Friends we have just received a message that a storm is brewing in the Indian Ocean.

Question 1.
Where were the passengers seated?
Answer:
There were seated in the dining room.

Question 2.
What splattered noisily?
Answer:
The loudspeaker splattered noisily.

Question 3.
Where was the storm brewing?
Answer:
The storm was brewing in the Indian Ocean.

B.
When he turned away, I quietly sneaked into the hospital room to see what they were doing to the patient. Two nurses were hurrying to and fro with trays full of medicines and syringes. Another was rushing off with Uncle’s wet clothes.

Question 1.
Who sneaked into the hospital?
Answer:
Vasantha sneaked into the hospital?

Question 2.
How many nurses were helping the doctor?
Answer:
Three nurses were helping the doctor.

Question 3.
What did two nurses carry with them?
Answer:
They were carrying trays full of medicines and syringes.

C.
I followed the officer eagerly. He left me outside the captain’s door, saying, “Go right inside.” I knocked and entered. The captain was standing in the middle of the room. When he saw me, he came forward and literally swept me off my feet. He was still smiling when he put me down.

Question 1.
What did Vasantha do?
Answer:
She followed the officer eagerly.

Question 2.
Where was the captain standing?
Answer:
The captain was standing in the middle of the room.

Question 3.
What did the captain do, when he saw her?
Answer:
When he saw her, he came forward and literally swept her off her feet.

Man Overboard Summary

Vasantha was on board a ship called ‘S.S. Rajula’. She was travelling to Singapore after her stay with her grandparents. She spent the day exploring the ship. It looked like a big house. There were furnished rooms, and a swimming pool, a room for indoor games, and a library. The | next day morning, the captain announced that they had received a message about a storm in the Indian Ocean. Most of the adults panicked. But Vasantha was excited about it. She remembered 1 of her class teacher telling them in class about a big storm. The teacher was on her way to Singapore.

Due to the storm, the ship rocked to and fro. Everything in the cabins rolled up and down. This 1 incident, which was told by her class teacher, made her imagination run wild. She thought it would; be fun if the storm broke when they had lunch. It would be a merry-go-round to all of them sitting on the chairs.

In the evening, a strong wind started blowing. The ship rocked to and fro. Huge waves were dashing against it. She noticed a man vomiting over the rails and looked rather blue about the mouth. A huge wave lashed the ship and the man tumbled over the railings into the wild sea. Vasantha shouted to save him. The captain heard this and sent the rescue team officers to save the man. Two life-boats moved towards the man. The captain was watching the rescue operation through a pair of binoculars. Vasantha could not see what was happening, as the boat was too far for her. But the captain was giving a running commentary to Vasantha.

The ship had dropped the anchor but was rising up and down. The two sailors caught hold of a rope. One of them tied the rope around his waist. With the man between them, the sailors swam back to the life-boats. The boat headed back to the ship. The ship’s doctor was ready at the railings with two nurses and a stretcher. The man was given immediate attention to improve his condition. A nurse told Vasantha that he was saved and would regain consciousness after a few minutes. The captain called Vasantha to his cabin and gifted her with a beautiful model of a ship. On it was inscribed “B.I.S.N. & Co. S.S. RAJULA.” She felt happy. She hugged and kissed the captain. She proudly showed the present to everyone. She was the happiest person on board that day.

Samacheer Kalvi 7th Science Solutions Term 3 Chapter 3 Polymer Chemistry

Leave a Comment / Class 7 / By Bhagya

Students can Download Science Chapter 3 Polymer Chemistry Questions and Answers, Notes Pdf, Samacheer Kalvi 7th Science Book Solutions Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 7th Science Solutions Term 3 Chapter 3 Polymer Chemistry

Samacheer Kalvi 7th Science Polymer Chemistry Textual Evaluation

I. Choose the correct answers :

Question 1.
The first man-made fibre is ________
(a) Nylon
(b) Polyester
(c) Rayon
(d) Cotton
Answer:
(c) Rayon

Question 2.
Which of the following is the strongest?
(a) Rayon
(b) Nylon
(c) Acrylic
(d) Polyester
Answer:
(b) Nylon

Question 3.
When you place a natural fibre in a flame it ________
(a) melts
(b) burns
(c) gets nothing
(d) explodes
Answer:
(b) burns

Question 4.
A synthetic fibre which has similar properties to wool is ________
(a) Nylon
(b) Polyester
(c) Acrylic
(d) PVC
Answer:
(c) Acrylic

Question 5.
A good application of plastic is the use of ________
(a) Blood bags
(b) Plastic cutlery
(c) Plastic straws
(d) Plastic carry bag
Answer:
(a) Blood bags

Question 6.
________ is non-biodegradable material.
(a) Paper
(b) A plastic bottle
(c) Cotton cloth
(d) Wool
Answer:
(d) Wool

Question 7.
PET is the acronym for ________
(a) Polyester
(b) Polyester and terylene
(c) Polyethylene terephthalate
(d) Polyetheneterylene
Answer:
(c) Polyethylene terephthalate

II. Fill in the blanks :

______ is an example of polyester fabric.
______ are used to identify different types of plastics.
A ______ is a long chain made up of many repeated small units called monomers.
The fully natural fibreis called ______
A natural fibre obtained by boiling of cocoons is called ______

Answer:

Raincoat
Resin codes
polymer
plant fibre
silk

III. True or False :

Question 1.
A lot of plastic pollutes our environment.
Answer:
True.

Question 2.
Refuse (avoid) is the best way to manage plastic.
Answer:
True.

Question 3.
It is good to wear clothes made of synthetic fibres while cooking.
Answer:
(False)
Correct statement: It is good to wear clothes made of fibres while cooking.

Question 4.
Degradable plastics break down into tiny pieces called microplastics.
Answer:
True.

Question 5.
Cotton is a natural polymer.
Answer:
True.

IV. Match the following :

A	B
1. Nylon	Thermoplastic
2. PVC	Thermosetting plastic
3. Bakelite	Fibre
4. Teflon	Wood pulp
5. Rayon	Non-stick cookwares

Answer:

A	B
1. Nylon	Fibre
2. PVC	Thermoplastic
3. Bakelite	Thermosetting plastic
4. Teflon	Non-stick cookwares
5. Rayon	Wood pulp

V. Arrange in Correct Sequence:

1. Mix water, starch, vinegar and glycerin in a cooking pot.
2. Let the article cool for 24 hours before we use it.
3. Shape material to form a cup or bowl.
4. Continuously mix on medium heat until the liquid turns clear.
5. When the liquid begins to bubble it is ready to be taken off the stove.
6. Spread the gel onto aluminium foil and cool.
Answer:
1. Mix water, starch, vinegar and glycerin in a cooking pot.
4. Continuously mix on medium heat until the liquid turns clear.
5. When the liquid begins to bubble it is ready to be taken off the stove.
6. Spread the gel onto aluminium foil and cool.
3. Shape material to form a cup or bowl.
2. Let the article cool for 24 hours before we use it.

VI. Analogy :

Question 1.
Cotton: natural:: Polyester: ______
Answer:
Synthetic.

Question 2.
PLA spoon :compostable:: Plastic spoon: ______
Answer:
Disposable.

Question 3.
Nylon :melts on heating:: Silk: ______
Answer:
Burns on heating.

VII. Assertion – Reason type question :

Option:
a. Both A and R are true and R is the correct explanation of A.
b. Both A and R are true but R is not the correct explanation of A.
c. A is true but R is false.
d. A is false but R is true.

Question 1.
Assertion (A) : Vegetable peels buried in the soil disappear within two weeks.
Reason (R) : Vegetable peels are compostable.
Answer:
(a) Both A and R are true and R is the correct explanation of A

Question 2.
Assertion (A) : It takes a very long time for nylon clothes to breakdown into microfibers but cotton clothes need only six months to decompose.
Reason (R) : Nylon made out of petrochemicals is non-biodegradable and cotton cloth is biodegradable.
Answer:
(a) Both A and R are true and R is the correct explanation of A

Question 3.
Assertion (A) : It is good to avoid plastics.
Reason (R) : Plastics end up polluting the environment.
Answer:
(a) Both A and R are true and R is the correct explanation of A

VIII. Crossword

Across
1. Fibre that is used as synthetic wool.
2. A plastic used for making water bottles.
3. A long chain made of small repeating monomers.
4. Another name for this semi-synthetic fibre is artificial silk.

Down:
5. A type of fibre that is naturally obtained from a cocoon.
6. A synthetic fibre classified as polyester.
7. A polymer used for making rope

IX. Very short answer :

Question 1.
What is the chemical name of the polymers that make up cotton?
Answer:
Cellulose.

Question 2.
What gives plastic different qualities and characteristics?
Answer:
Different chemicals (additives) are added to plastic to give them various qualities and characteristics.

Question 3.
It is not advisable to burn plastic and synthetic fabrics. Why?
Answer:
Burning of plastics and synthetic fabrics is not a good solution, as we end up wasting non-renewable resources and produce super toxic chemicals that are difficult to store or dispose safely.

Question 4.
A bucket made of plastic does not rust like a bucket made of iron. Why?
Answer:

The reason is due to their chemical composition.
The bucket is made of plastic which does not react with the oxygen and humidity present in air.
While the iron reacts with the oxygen, air corrodes to form rust.

Question 5.
Why is it better to avoid the use of plastic products?
Answer:

Plastics do not decompose by natural processes and action of bacteria and are therefore not biodegradable.
A lot of the plastic produced globally is designed to be used only once and thrown away, creating a large amount of plastic waste.
Plastic waste ends up being recycled, incinerated, landfilled, dumped or ends up littering our environment.
So, it is better to avoid the use of plastic products.

Question 6.
Give two examples of thermosetting plastics.
Answer:
Bakelite, Melamine.

Question 7.
What is the 5 R principle?
Answer:
Plastic disposal is the 5 R principle, Refuse, Reduce, Reuse, Recycle and Recover is called as 5 R principle.

X. Short Answer :

Question 1.
What does the term biodegradable mean?
Answer:
A material that gets decomposed through natural processes and action by bacteria is called biodegradable

Question 2.
What kind of fabric is suitable to dress-up and play in summer? Why?
Answer:

In summer it is better to wear clothing that is made out of cotton materials rather than synthetic.
This is because most synthetic fibres absorb very little moisture and do not allow air circulation making them hot and uncomfortable to wear.

Question 3.
How do plastics impact animals and the environment?
Answer:

The increase in the use of plastics, particularly the one-time use and throw away plasticshas serious impacts on the environment, animals and our health.
We have seen garbage dumps with different plastics. One big problem with plastics is that they do not decompose or biodegrade.
This leads to large amounts of waste that will not disappear and end up accumulating and polluting the environment.
Many animals confuse plastic for food and eat it by accident. When leftover food is thrown away it is often packed in plastic. Animals smell the leftover food and eat the plastic by accident.

XI. Long Answer :

Question 1.
List the advantages and disadvantages of synthetic fibres.
Answer:
Advantages-and disadvantages of synthetic fibres.

Advantages of synthetic fibres		Disadvantages of synthetic fibres
1.	Do not wrinkle easily and they keep their colour and brightness for a much longer time than natural fibres such as cotton.	synthetic fibres such as polyester is that they are not heat resistant and catch fire easily.
2.	Using synthetic fibres such as nylon, is that they are stronger than many natural fibres such as silk or wool.	Most synthetic fibres absorb very little moisture and do not allow air circulation making them hot and uncomfortable to wear.
3.	These fibres are strong and elastic which gives it the properties to bounce.	Synthetic fibres are made out of petrochemicals and last in the environment for a very long time. It break down into very small pieces called microplastics which cause pollution to soil and water bodies such as rivers, lakes and oceans.

Question 2.
Suggest safe methods of disposing plastics.
Answer:
Refuse (Avoid):

The best thing to do is to avoid using plastic products.
One-time use throw away plastics can often be avoided.

Reduce : Reducing the amount of plastic we use is important.
Reuse : If possible products made of plastics can be used again and again.
Recycle:

It is better to recycle plastic waste.
Separating plastic waste (based on the resin code) and making sure it gets recycled is good as it turns waste materials into something new.
Then it will not be thrown away in landfills, open dumps or ending up as litter in the environment.
Solid waste can be converted into resources such as electricity and compost through thermal and biological means.

XII. HOTS :

Question 1.
The Tamil Nadu Government has banned the use of one-time use throw away plastics. Why
do you think this is important?
Answer:
It is important to reduce the negative consequences of plastics on the environment.

Question 2.
A plastic bag dumped in the soil stays without breaking down for 500years. If a new generation starts in every 30 years, how many generations would it take to see the plastic bag finally broken down?
Answer:
It would take 16 to 17 generations to see the plastic bag finally broken down.

XIII.
Question 1.
Fill in the blanks :

Answer:

Question 2.
Look at the following picture and explain what is happening

Answer:
A lot of one-time use plastic such as polythene bags and food packaging that are thrown away are responsible for littering the environment and clogging drains. Standing water breeds mosquitoes that can spread diseases such as malaria dengue and chickungunya and also lead to flooding.

Question 3.
Read the following information and convert them into a graph to compare the countries and the amount of plastic they use.
China contributes the highest share – that is around 28%, of the total plastic used globally. Indonesia uses 10%, both the Philippines and Vietnam use 6% each; Thailand uses 3.2%, Egypt 3%, Nigeria 2.7% and South Africa 2%.
Answer:

Samacheer Kalvi 7th Science Polymer Chemistry Intext Activity

Activity – 2
How Strong is Nylon? Take an iron stand with a clamp. Take samples of cotton, wool, nylon and silk threads of about 50cm in length.
First tie cotton thread to the stand so that it hangs freely from it. At the free end, attach a CD as plate so that weights can be placed on it. Add weights starting from 10 grams one by one, until the thread breaks. Note down the total weight required to break the cotton thread. Repeat the same activity with the wool, silk and nylon threads. NOTE: All the varieties of threads should be of same thickness.

Question 1.
Arrange the threads in the order of increasing strength.
Answer:
Cotton, Wool, Silk, Nylon.

Question 2.
What do you infer from the above activity?
Answer:
Nylon thread is the strongest thread.

Question 3.
Which type of fibre is the strongest?
Answer:
Nylon.

Question 4.
Which type of fibre is the weakest?
Answer:
Cotton.

Activity – 4

Question 1.
Synthetic or Natural Fibres : The teacher can give the learner a piece of each and every type of fibre. The learner can feel the fibre and write down the name of the fibre and state whether it is natural or synthetic fibre.
Answer:

S.No	Name of the fibre	Type of the fibre- Natural /Synthetic
1.	Jute	Natural
2.	Cotton	Natural
3.	Rayon	Synthetic
4.	Wool	Natural
5.	Polyester	Synthetic

Question 2.
We have done four activities so far. Which activity helped you better to identify the type of fibre?
Answer:
Activity 3, 4

Activity – 5

Question 1.
What do you observe while the cotton cloth burns?
Answer:
The cotton cloth burns completely. Does not melt and has the odour of burning paper.

Question 2.
What do you observe while the polyester cloth burns?
Answer:
Polyester cloth melts on burning and giving off black smoke.

Activity – 6

Question 1.
We use an umbrella on rainy days. What kind of umbrella do we use?
Answer:
Nylon or Polyester

Question 2.
Which of these fabrics allows water to pass through?
Answer:
Cotton cloth allows water to pass through whereas umbrella cloth does not allow water to pass through.

Question 3.
Which of these fabrics dries the fastest? The cotton cloth or the umbrella cloth?
Answer:
Umbrella cloth dries the fastest.

Activity – 7

Question 1.
Right and wrong application of plastics.
Look at the list of eight plastic items. Decide which four plastic items are used for the right application and which four are used for the wrong application by filling in the chart below: Plastic items: straws, helmets, cutlery, thin carry bags, syringes, electrical wires,tea cups and blood bags

Answer:

Right application	Wrong application
Helmets	Straws
Syringes	Thin carry bags
Electrical wires	Cutlery
Blood bags	Tea cups

Activity – 8
Question 1.
Identify the different types of plastics.
Collect different kinds of plastic products and look carefully for the resin code and/or acronym on them. With the help of the resin code chart, mark the resin code number, acronym, if you think it is a safer, unsafe or questionable (when you cannot find the resin code in the article) type of plastic. What resin codes do you find? Is the resin code safer, un safe or questionable?
Answer:

Product	Resin code number	Acronym	Category of safety	Use of product
Rain coat	03	PVC	Unsafe	During rain
Pens	06	PS	Unsafe	To write

Samacheer Kalvi 7th Science Polymer Chemistry Additional Questions

I. Choose the correct answer.

Question 1.
Which of these is a natural fibre?
(a) Nylon
(b) Cotton
(c) Rayon
(d) Polyester
Answer:
(b) cotton

Question 2.
Which of these plastics is a polymer?
(a) Bakelite
(b) Polystyrene
(c) Polythene
(d) All of these
Answer:
(d) All of these

Question 3.
Which of these is not a property of plastics?
(a) Inflammable
(b) Bad conductor of heat
(c) Soluble in water
(d) Bad conductor
Answer:
(c) Soluble in water

Question 4.
Pick the synthetic fibre out of the following.
(a) Jute
(b) Cotton
(c) Nylon
(d) Wool

Question 5.
Which is a thermosetting plastic?
(a) Melamine
(b) Polythene
(c) PVC
(d) Nylon
Answer:
(a) Melamine

Question 6.
Which of the following is non – bio degradable?
(a) Plastic
(b) Paper
(c) Cotton cloth
(d) Wood
Answer:
(a) Plastic

Question 7.
The material similar to silk in appearance is.
(a) nylon
(b) rayon
(c) polyester
(d) terylene
Answer:
(b) rayon

Question 8.
The fibres such as rayon, nylon, polyester are obtained from
(a) natural resources
(b) chemical substances
(c) minerals
(d) plants and animals
Answer:
(b) chemicals substances

Question 9.
Which of the following fibres is considered as the strongest natural fibre?
(a) Cotton
(b) Jute
(c) Silk
(d) Wool
Answer:
(c) Silk

Question 10.
Which of the following is found in sanitary products?
(a) Nylon
(b) Wool
(c) Jute
(d) Rayon
Answer:
(d) Rayon

II. Fill in the Blanks.

Polymers are very long chains made of repeating smaller molecules called ______
All the ______ present in your body are polymers.
______ is made of sugar molecules and is the main component of cotton used in clothing.
______ and ______ are the building block monomers that make up many different types of plastics.
______ are long strands of polymers interwoven to form linear, string-like structures.
Fibres that are made using raw materials from ______ are synthetic fibres.
The cellulose dissolves in the chemicals added to it and produces syrup called ______
Nylon is a plastic polymer made of chemical units called ______
______ is a synthetic fibre which is strong and elastic that it has the ability to bounce.
Syringe that is made from a type of plastic called ______
Edmund Alexander Parkes was the creator of the first plastic called .
resists fire and can tolerate heat.
Poly Lactic Acid or polylactide is and , thermoplastic.

Answer:

monomers
proteins
Cellulose
Ethylene, propylene
Fibres
petroleum
Viscose
Polyamides
Trampoline
polypropylene
Parkesine
Melamine
Compostable, bioactive

III. True or False – if false, give the correct statement.

Question 1.
Polycot is a mixture of polyester and cotton.
Answer:
True

Question 2.
Polyamides are made with monomers.
Answer:
True

Question 3.
Wool is the first fully processed synthetic fibre.
Answer:
Correct statement: is the first fully processed synthetic fibre.

Question 4.
Rayon is a fibre obtained by the chemical treatment of wood pulp.
Answer:
True

Question 5.
Plastics are flexible and waterproof and some are even UV resistant.
Answer:
True

Question 6.
Bakelite and melamine are some examples of thermoplastics
Answer:
False
Correct statement: Bakelite and and melamine are some examples of thermosettingplastic

Question 7.
Polyvinyl chloride has heavy metals such as cadmium and lead which are toxic and harmful to our health.
Answer:
True

Question 8.
Plastics can be found in toothpaste, facewash and bodyscrubs.
Answer:
False
Correct statement : can be found in toothpaste, facewash and bodyscrubs.

Question 9.
Plastics are environment friendly.
Answer:
False
Correct statement: Plastics are not environment friendly.

Question 10.
Artificial fibres are stronger than natural fibres.
Answer:
True

Question 11.
Electric switches, plugs, sockets and handles of cooling utensils are made up of thermoplastics.
Answer:
Correct statement: Electric switches, plugs, sockets and handles of cooling utensils are made up of thermosetting plastic

IV. Match the following :

Question 1.

1.	Teflon	(a)	Fabrics do not wrinkle easily
2.	Nylon	(b)	Used to make non-stick cookwares
3.	Polyester	(c)	Prepared by using pulp
4.	Rayon	(d)	Used for making parachutes and stockings

Answer:

Question 2.

1.	Nylon	(a)	Artificial silk
2.	PET	(b)	Artificial wool
3.	Rayon	(c)	Parachute
4.	Acrylic	(d)	Polyester

Answer:

Question 3.

1.	Plastic bags	(a)	Polyvinyl chloride
2.	PVC	(b)	Natural fibre
3.	Melamine	(c)	Non-bio degradable
4.	Wood	(d)	Thermosetting plastic

Answer:

V. Very short answers:

Question 1.
What is the full form of PVC?
Answer:
Poly Vinyl Chloride.

Question 2.
Name a synthetic fibre which works like wool?
Answer:
Acrylic.

Question 3.
Plastic articles are available in all possible shapes and sizes. Why?
Answer:
Plastic is easily mouldable, so the articles can be made in any shape and size.

Question 4.
Name the unit used in the formation of a polymer.
Answer:
Monomer is the small unit used in the formation of a polymer.

Question 5.
Name the form of polyester which is replacing materials like glass and used for making bottles and jars.
Answer:
PET (Polyethylene Terephthalate) is a form of polyester.

Question 6.
For making PVC pipes, which type of plastic is used?
Answer:
Thermoplastic.

Question 7.
Name the plastic. Which is coated on the uniform of fireman to make it fire resistant?
Answer:
Melamine is coated in the uniforms of fireman.

Question 8.
Name a natural polymer occuring in plants.
Answer:
Cellulose, Starch, etc.

Question 9.
On burning wool, why we get the small of burning of hair?
Answer:
Since, wool is made from hair of sheep, it gives smell of burning hair.

Question 10
What is polymerization?
Answer:
The process by which monomers are linked together by covalent bonds to form polymers is called polymerization.

VI. Short Answer.

Question 1.
Why is rayon called on artificial silk?
Answer:

Rayon is a synthetic fibre having properties similar to that of silk.
It was obtained by chemical treatment of wood pulp.
That’s why, it is called an artificial silk.

Question 2.
What are the various methods of disposing plastics?
Answer:

Refuse
Reduce
Recycle
Recover

Question 3.
What is compostable plastic?
Answer:

Plastics which are derived from renewable resources such as corn, sugar cane, avocado seeds or shrimp cells.
It can be broken down completely by microbes and turned back into food for plants – COz, methane, water and other natural compounds.

Question 4.
Why do you think some animals eat plastic?
Answer:

Many animals confuse plastic for food and eat it by accident.
When leftover food is thrown away it is often packed in plastic.
Animals smell the leftover food and eat the plastic by accident.

Question 5.
What do you mean by microplastics?
Answer:

Synthetic fibres are made out of petrochemicals and last in the environment for a very long time.
It break down into very small pieces called microplastics which cause pollution to soil and water bodies such as rivers, lakes and oceans.

Question 6.
Mention a few household products in which microbeads can found.
Answer:
Microbeads can be found in toothpaste, facewash and bodyscrubs.

Question 7.
What is thermoplastics and thermosetting plastics?
Answer:
Plastics which can be easily softened and bent when heated are known as thermoplastic . There are some plastics which once they are moulded, cannot be softened through heating them. These are called Thermo plastic

Question 8.
Hot foot stuff should not be kept in polythene containers. Why?
Answer:
Hot food stuff should not be kept in polythene containers since polythene is a thermoplastic.

Question 9.
Plastics have completely occupied our life. Why?
Answer:

Plastics have completely occupied our life because of their characteristic qualities.
Plastics have many positive qualities such as lightweight, strong and they can be moulded into complex shapes.
They are also flexible and waterproof and some plastics are even UV resistant.
Plastics are also cheap and convenient for us to use.

VII. Long Answer

Question 1.
Explain about plastic eating bacteria.
Answer:

In 2016, scientists from Japan tested different bacteria from a bottle recycling plant and found that Ideonellasakaiens is 201-F6 could digest the plastic used to make single-use drinks bottles that are made of polyethylene terephthalate (PET).
The bacteria works by secreting an enzyme known as ‘PETase’, that breaks down plastic into smaller molecules.
These smaller molecules are then absorbed by the bacteria as a food source.
The scale of the bacteria breaking down plastics is much slower and will therefore not solve the crisis we are facing.

Question 2.
Write a note on manufacturing of glass.
Answer:

Glass is prepared by heating (SiO) silicondi-oxide until it melts, about 1700°C and Sodium Carbonatfe is added to it.
Then it is cooled down really fast.
When SiO2 silicondi-oxide melts, the silicon and oxygen atoms break out of their crystal structure.
If we cooled it slowly, the atoms would slowly line up back into their crystalline arrangement.
But if we cool the liquid fast enough, the atoms of the silica will be halted in their tracks, they won’t have time to line up, and they will be stuck in any old arrangement, with no order to the arrangement of the atoms.
We call materials like this as amorphous.

Question 3.
Write the importance of rayon.
Answer:

Some types of rayon are made from the short cotton fibres left on cotton seeds after ginning.
Rayon is cheaper than silk, can be woven like natural silk fibre and can be dyed in a wide variety of colours.
It can be mixed with cotton to make bed sheets or with wool in the production of carpets and home furnishing products.
Rayon is also found in sanitary products, diapers, bandages and gauze for dressing

VIII. Complete the following crossword with the help of the clues provided:

Across:
5. First artificially made fibre.
6. Join together to form polymers.
7. Made of ester units.

Down:
1. Terylene and cotton blend.
2. An example of a thermosetting platics.
3. Artificially made fibres.
4. Used to make parachutes.

IX. HOTS:

Question 1.
Ram took with him some nylon ropes, when he was going for rock climbing. Can you tell why he selected nylon ropes instead of ropes made up of cotton or jute?
Answer:

Nylon ropes are strong, elastic and lighter as compared to cotton and jute ropes.
A nylon thread is actually stronger than a steel wire of similar thickness.

Question 2.
Ramya loves to were the clothes made up of synthetic fibres. When she was working in kitchen, her mother advised her not to wear the synthetic clothes.

Why Ramya’s mother advised her not to wear synthetic clothes while working in kitchen?
Why Ramya loves to wear synthetic dress?

Answer:

Synthetic fibres melt on heating. It the clothes catch fire, it can be disastrous. The fabric melts and sticks to the body of the person wearing it. So, she advised here not to wear synthetic clothes while working in kitchen.
Ramya loves to wear synthetic dress because these clothes dry up quickly, durable, less expensive, readily available and easy to maintain.

Samacheer Kalvi 7th English Solutions Term 3 Supplementary Chapter 1 Sindbad – My First Voyage

Leave a Comment / Class 7 / By Bhagya

Students can Download English Lesson 1 Sindbad – My First Voyage Questions and Answers, Summary, Notes Pdf, Activity, Samacheer Kalvi 7th English Book Solutions Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 7th English Solutions Term 3 Supplementary Chapter 1 Sindbad – My First Voyage

Read And Understand

A. Match the following.

Column – A		Column – B
1.	green island	(a) in the cave
2.	Mihrjan	(b) huge fish
3.	Sindbad the Sailor	(c) the king
4.	Sindbad the Porter	(d) voyager
5.	slaves	(e) poor listener

Answer:

B. Choose the correct options from the ones.

Sindbad decided to sail to the __________ (Persian Gulf / Mexican Gulf) with some goods.
He was being tossed by powerful waves and was thrown on an /a __________ (island / peninsula)
The men in the cave were all __________ (ministers/slaves) of the king.
The king was a __________ (noble and kind/mean and cruel) person.
The king gave many valuable __________ (gifts/rewards) to Sindbad.

Answer:

Persian Gulf
island
slaves
noble and kind
gifts

C. Read the passage and answer the questions given below.

One day, when I was standing on the port, I saw a ship approaching the port. It was the same ship, which had sailed further after leaving me behind, struggling in the sea. When the captain of the ship saw me, he was greatly surprised to find me alive. He and the other crew members hugged me with happiness. The captain handed over my goods to me, which had been left on the ship.

Question 1.
Where was he standing?
Answer:
He was standing on the port.

Question 2.
What did he see?
Answer:
He saw a ship approaching the port.

Question 3.
Whom did he meet on the ship and why was the person surprised?
Answer:
He met the captain on the ship. The person was surprised to find him alive.

Question 4.
What did he get back from the captain?
Answer:
He got back his goods from the captain.

D. Rearrange the following sentences in the correct order.

1. I longed to go back home.
2. I narrated my tale of sufferings and hardships to the king.
3. Our group sailed from one country to another, selling goods.
4. I saw the same ship approaching the port.
5. My father was a rich merchant.
6. I was being tossed by the frequent powerful waves.
7. Sindbad completed the tale of his voyage.
8. He presented the purse full of gold coins.
Answer:
5. My father was a rich merchant.
3. Our group sailed from one country to another, selling goods.
6. I was being tossed by the frequent powerful waves.
2. I narrated my tale of sufferings and hardships to the king.
1. I longed to go back home.
4. I saw the same ship approaching the port.
7. Sindbad completed the tale of his voyage.
8. He presented the purse full of gold coins.

E. Work in pairs and write the answers.

Question 1.
Describe the island that the ship’s crew found.
Answer:
One day, they were on board. They saw a beautiful small green island. Just to have some fun, they all got down on it. As soon as they lit the fire for cooking, they got a jerk. The island was trembling. It was not an island. It was the back of a huge animal. It got disturbed when the fire was lit on his back.

Question 2.
Did Sindbad, the porter, enjoy his meeting with Sindbad the sailor? Why?
Answer:
Yes, Sindbad the porter enjoyed his meeting with Sindbad, the sailor. He was listening to the amazing tale of Sindbad with all wonder. The rich Sindbad bade him good bye and asked him to come the next day to hear the tale of his new voyage. He presented him a purse full of gold coins. The unexpected riches overjoyed Sindbad, the porter. He thanked him and went home.

Project

F. Brochure Making

Your school is organising an educational trip. Work in a team and prepare a brochure for the trip, Include places to see, essential things to be brought, and the activities one can do on the trip.

Activity to he done by the Students

Connecting To Self

G. Road Safety
Road safety rules make our driving a better experience. As a responsible citizen we ought to obey traffic rules and pay attention to the road signs.
Look at the picture. Circle the dangerous actions of pedestrians on or near the road. Discuss in groups and write down the Pedestrians Road Safety Rules.

Answer:

Cross the road after looking at both ways-
Don’t run on the streets and road
Read and Interpret road safety signs-
While walking, use only the sidewalks-
Cross the road only at Zebra crossing-
Ensure bicycle safety-

Step To Success

H. A set of words are given below. Categorize it under the appropriate columns.

Answer:

Sindbad – My First Voyage Additional Questions

I. Choose the Correct Answers (MCQ).

Question 1.
My father was a rich _________
(a) trader rich
(b) farmer
(c) merchant
(d) landlord
Answer:
(c) merchant!

Question 2.
I decided to sail from _________ gulf with some goods.
(a) Persian
(b) Mexican
(c) California
(d) Alaska
Answer:
(a) Persian

Question 3.
As soon as we lit the fire for cooking, we got a _________
(a) shiver
(b) jerk
(c) tremble
(d) shake
Answer:
(b) jerk!

Question 4.
We were when we realized this _________
(a) surprised
(b) shocked
(c) baffled
(d) terrified
Answer:
(d) terrified

Question 5.
I was one among those _________
(a) survivors
(b) sufferers
(c) strugglers
(d) leaders
Answer:
(c) strugglers

Question 6.
At last, I was thrown on _________
(a) an island
(b) a land
(c) a shore
(d) the raft
Answer:
(a) an island!

Question 7.
As I walked further in this _________ land, I met a man.
(a) new
(b) beautiful
(c) vast
(d) strange
Answer:
(d) strange

Question 8.
They served me
(a) disk good _________ and drink.
(b) lunch
(c) food
(d) supper
Answer:
(c) food

Question 9.
During my stay, I witnessed a: number of _________ sights.
(a) great
(b) beautiful
(c) exciting
(d) remarkable
Answer:
(d) remarkable

Question 10.
Finally, I returned to my city _________ as a rich man.
(a) Baghdad
(b) Babylon
(c) Persepolis
(d) Bukhara
Answer:
(a) Baghdad

II. Write True or False against each statement.

Sindbad was a man from Baghdad.
Sailor Sindbad’s father was a poor man.
Everyone jumped into the boat to save their lives.
Sindbad held on to the wood when tossed by the waves.
The king was a merciless man.

Answer:

True
False
False
True
False

III. Very Short Questions with Answers.

Question 1.
When did Sindbad’s father die?
Answer:
Sindbad’s father died, when he was young.

Question 2.
What did Sindbad decide to do, after he lost his wealth?
Answer:
Sindbad decided to sail for the Persian Gulf with some goods.

Question 3.
What did the group see, when they were on board?
Answer:
They saw a beautiful small green island.

Question 4.
Was it really an island? What was it?
Answer:
No, it was not an island. It was the back of a huge animal.

Question 5.
Where was Sindbad thrown by the waves?
Answer:
Sindbad was thrown on an island.

Question 6.
What happened to Sindbad’s limbs? Why?
Answer:
Sindbad’s limbs became stiff and refused to move because of his continuous

Question 7.
How did he quench his thirst?
Answer:
He quenched his thirst from a spring on the island.

IV. Short Questions with Answers.

Question 1.
Who were the men present on the island? What did they serve Sindbad?
Answer:
They were all the slaves of the king of the island. They served Sindbad with good food and drink.

Question 2.
Who was Mihrjan? What type of person was he?
Answer:
Mihrjan was the ruler of the island. He was a noble and kind person.

Question 3.
What did the king do, after hearing Sindbad’s tale of suffering?
Answer:
The king sympathized with him and appointed him as an officer on the spot.

Question 4.
What did the seawater around the island contain?
Answer:
The seawater around the islands contained huge and terrible fishes. A few were a hundred times bigger than the largest ship.

Question 5.
What did Sindbad ask the visiting sailors?
Answer:
Sindbad asked them about his city Baghdad, but no one knew about it.

V. Paragraph Question with Answer.

Question 1.
How did Sindbad spend his stay on the island?
Answer:
The king appointed him as an officer. He became friendly with the people on the island. During his stay, he witnessed a number of remarkable sights. There were huge fishes in the seawater around the island. Once, he saw a fish that had a head like a bull. He also witnessed many unimaginable wonders. Ships from different parts of the world visited the small island. But the visiting sailors did not know about the city of Baghdad. Sindbad longed to go back home.

VI. Rearrange the following sentences in a coherent order.

A
1. Just to have fun, we all got down on that green patch.
2. Our group sailed from one country to another, selling the goods.
3. I returned to my senses only after the loss of all the wealth.
4. I decided to sail for the Persian Gulf with some goods.
5. One day, when we were on board, we saw a beautiful small green island.
Answer:
3. I returned to my senses only after the loss of all the wealth.
4. I decided to sail for the Persian Gulf with some goods.
2. Our group sailed from one country to another, selling the goods.
5. One day, when we were on board, we saw a beautiful small green island.
1. Just to have fun, we all got down on that green patch.

B.
1. I thanked the king for his kindness and all the favours he had done to me.
2. The king again gave me many valuable farewell gifts.
3. When it was time to leave, I went to meet the king.
4. Finally, I returned to my city Baghdad as a rich man.
5. Meanwhile, I did good business and earned a lot of money.
Answer:
5. Meanwhile, I did good business and earned a lot of money.
3. When it was time to leave, I went to meet the king.
1. I thanked the king for his kindness and all the favours he had done to me.
2. The king again gave me many valuable farewell gifts.
4. Finally, I returned to my city Baghdad as a rich man.

C.
1. He asked him to come the next day to hear the tale of his new voyage.
2. Sindbad the sailor then bade goodbye to the poor porter.
3. The unexpected riches overjoyed Sindbad, the porter.
4. He thanked his rich host and went home.
5. But before leaving he presented Sindbad a purse full of gold coins.
Answer:
2. Sindbad the sailor then bade goodbye to the poor porter.
1. He asked him to come the next day to hear the tale of his new voyage.
5. But before leaving he presented Sindbad a purse full of gold coins.
3. The unexpected riches overjoyed Sindbad, the porter.
4. He thanked his rich host and went home.

VII. Read the passage and answer the questions.

A.
In this extract, the rich Sindbad describes his first voyage to the poor Sindbad (porter). My father was a rich merchant. When he died, I was still young. He left behind a big wealth. However, I was an inexperienced thoughtless youth and spent all his wealth foolishly.

Question 1.
To whom did Sindbad describe his first voyage?
Answer:
Sindbad describes his first voyage to the poor Sindbad, the porter.

Question 2.
What did his father leave behind?
Answer:
His father left behind a big wealth.

Question 3.
How did he spend all his wealth?
Answer:
He spent all his wealth foolishly.

Question 4.
When did his father die?
Answer:
His father died, when he was young.

Question 5.
What kind of youth was Sindbad?
Answer:
Sindbad was an inexperienced thoughtless youth.

B.
I was being tossed by the powerful sea waves but I held on to the wood and kept floating for
a long time. At last, I was thrown on an island. I was very tired and extremely hungry.

Question 1.
What did Sindbad hold on to?
Answer:
Sindbad held on to the wood.

Question 2.
How long did he float?
Answer:
He floated for a long time.

Question 3.
Where was he thrown?
Answer:
He was thrown on an island.

Question 4.
How did Sindbad feel after reaching the island?
Answer:
Sindbad was very tired and extremely hungry.

Question 5.
What does the word ‘tossed’ mean?
Answer:
The word ‘tossed’ means ‘thrown about’.

Sindbad – My First Voyage Summary

Sindbad, the sailor is a fictional mariner and the hero of a story cycle of Middle-Eastern origin. He was a man from Baghdad who had fantastic adventures in magical realms. In this extract, the rich Sindbad describes his first voyage to the poor Sindbad, the porter.

When the father of rich Sindbad died, he left behind a big wealth. Sindbad spent all his wealth foolishly. After realising his fault, Sindbad decided to sail for the Persian Gulf with some goods. One day, onboard, their group saw a beautiful small green island. Out of curiosity, they all got down on that green patch. They decided to cook, as they were hungry. As soon as they lit the fire for cooking, they got a jerk. The island was shaking. It was not an island. But a huge animal. Everyone jumped into the sea to save his life. A few of them couldn’t board the ship and they were left there struggling for their life. Sindbad was one among them.

Fortunately, he caught hold of a big piece of wood and kept floating for a long time. He was thrown on an island. There, he met a man who helped him to get good food and drink. Later, when he narrated his sufferings to the king of the Island, Mihrjan, he took pity on him. He appointed him as an officer on the spot. There Sindbad witnessed many unimaginable wonders. He became friendly with the people there. But longed to go back. One day, the same ship which he boarded, happened to come to that place. The captain of the ship was surprised to find Sindbad alive.

Sindbad presented some of his goods to the kind king. In return, the king also gave him expensive presents. As the ship stayed on the island for a few days, Sindbad did good business and earned a lot of money. Finally, he returned to his city Baghdad as a rich man. Sindbad completed his story and bade goodbye to the poor porter. He presented him with a purse-full of good coins. The unexpected riches overjoyed the porter.