Natural Fibers

Q. Burning of cotton smells like burning paper but burning of wool smells like burning hair.why?

Q.

Burning cotton or cotton clothes smell like burning paper whereas burning wool Smells Like a burning hair Why?

Q.

Which of the following materials did people use in ancient times for making clothes?

(i) Leaves of trees

(ii) Newspaper

(iii) Metal foils

(iv) Animal skins and furs.

1. (i) and (ii)

2. (i) and (iii)

3. (ii) and (iii)

4. (i) and (iv)

Q.

_________ and _________ fibres are obtained from animals.

Q.

Why do people buy polyfill pillows instead of cotton pillows?

Q.

Which of the following has the same monomer unit?

1. Nylon and cellulose

2. Polyester and nylon

3. Rayon and nylon

4. Cellulose and rayon

Q.

Give 5 examples of natural fibre and artificial fibre.

Q.

Why are quilts filled with fluffy cotton?

Q.

Which of the following materials did people use in ancient times for making clothes?

(1) Newspaper
(2) Leaves of trees
(3) Metal Foils
(4) Animal skins and furs

1. (1) and (4)

2. (2) and (3)

3. (2) and (4)

4. (1) and (2)

Q. Nylon fibre is obtained from plants.

1. True
2. False

Q.

Paheli wanted to buy a gift made of animal fibre obtained without killing the animal. Which of the following would be the right gift for her to buy?

1. Woolen shawl

2. Silk scarf

3. Animal fur cap

4. Leather jacket

Q. Kavita wants to present her friend a gift made of plant fibre. Which amongst the following will be the best choice for the gift?

1. Leather belt
2. Jute bag
3. Silk saree
4. Woollen shawl

Q.

Sunil went to a cloth shop. There he found a fabric which was smooth to touch, had vibrant colour and shine. The fabric could be ___.

1. Wool

2. Cotton

3. Silk

4. Jute

Q.

29. What materials people used in ancient times for clothes ?

Q.

Complete the correlation by identifying the correct option at the place of A?

I: Silk: Silkworm

II: Wool: A

1. Elephant

2. Camel

3. Sheep

4. Dog

Q.

Assertion:- Woolen clothes are preferred to be worn in winters.

Reason:- Air is trapped inside the woolen fibres which prevents the heat loss from human body.

1. Assertion:- False

   Reason:- False

2. Assertion:- False

   Reason:- True

3. Assertion:- False

   Reason:- False

4. Assertion:- True

   Reason:- True

Q.

Preeti describes a fabric as following:-

(a) It wrinkles easily.

(b) It absorbs water quickly.

(c) It is soft to touch.

(d) It is a plant fibre.

Which of the following fibres mentioned below can form such fabric?

1. Nylon

2. Cotton

3. Silk

4. Wool

Q.

Once, Kavita visited a tailor shop and brought home some cuttings of fabric to study their properties. She took two pieces and found that one of the pieces (X) was shrinking when it was burnt with a candle. However, the other piece (Y) did not shrink on burning. Identify the material X and Y.

1. X:- Cotton

   Y:- Silk

2. X:- Sik

   Y:- Cotton

3. X:- Cotton

   Y:- Wool

4. X:- Wool

   Y:- Silk

Q. Assertion :Acrylic is a synthetic fibre. Reason: Clothes made from acrylic are expensive.

1. Assertion and reason both are correct statements and reason is correct explanation for assertion.
2. Assertion and reason both are correct statements but reason is not correct explanation for assertion.
3. Assertion is correct statement but reason is wrong statement.
4. Assertion is wrong statement but reason is correct statement.

Q. Which fibre is most suitable for making ropes for rock climbing, making parachutes and fishnets?

1. Nylon
2. Terylene
3. Acrylic
4. Rayon

Q. Write advantages and disadvantages of natural fibres.

Q.

Following figure shows which type of fibre?

1. Synthetic fibre

2. Natural fibre

3. Animal fibre

4. Both Synthetic and Natural fibre

Q. Which fibre is most suitable for making ropes for rock climbing, making parachutes and fishnets?

1. Nylon
2. Terylene
3. Acrylic
4. Rayon

Q.

54 Which of the following materials did people use in ancient times for making clothes?
(i) Leaves of trees (ii) Newspaper (iii) Metal foils (iv) Animal skins and furs

1. (i) and (ii)

2. (i) and (iii)

3. (ii) and (iii)

4. (i) and (iv)

Q.

A:- Fibre burns with the smell like a burning hair.

B:- Fibre burns with the smell like a burning paper.

From the below-mentioned fibres identify which burns as A and B?

1. A:- Silk, Wool

   B:- Cotton

2. A:- Silk, Cotton

   B:- Wool

3. A:- Cotton

   B:- Wool, Silk

4. A:- Wool, Cotton

   B:- Silk

Q. How do hair of body help in maintaining your body temperature

Q. Choose the correct pair of natural and synthetic fibre.

1. Natural fibre - nylon, synthetic fibre - jute
2. Natural fibre - jute, synthetic fibre - cotton
3. Natural fibre - jute, synthetic fibre - nylon
4. Natural fibre - silk, synthetic fibre - cotton

Q.

Which of the following is a plant fibre?

1. Wool

2. Yak fibre

3. Silk

4. Jute

Q. Silk is expected to have originated in .

1. India
2. China
3. Japan

Q.

Fibre is a ___.

1. single and elongated piece of material which is similar to threads.

2. polymer of cotton

3. made from animal's skin

4. mixture of iron and wood