Characteristics of Fibres

Q.

short uses of wool in points

Q.

If the following fabrics are soaked in same amount of water then which of them will dry first and last?

Nylon, Polyester, Silk, Wool, Cotton and Jute.

1. First- Nylon, Last- Cotton
2. First- Polyester, Last - Jute
3. First- Silk, Last- Polyester
4. First- Wool, Last- Jute

Q. Cotton fibre takes less time to absorb water as compared to polyester fibre.

1. False
2. True

Q. Assertion (A): Synthetic fibres have less water absorbing capacity.
Reason (R): They have hollow space in midst of a single fibre.
Choose the correct option.

1. Both A and R are correct.
2. Both A and R are incorrect.
3. A is correct but R is incorrect.
4. A is incorrect but R is correct.

Q.

Which fabric traps most of the air

Q.

80 Write the two uses of cotton.

Q.

Silk is a natural fibre with continuous filaments which can stretch upto1 Km

1. True
2. False

Q. The hair of yak is trimmed and sold. Some special type of fibre is made from their hair. Identify the cloth that would be made from such fibre.

1. Summer wear
2. Fire safety wear
3. Swim suit
4. Sweaters

Q. Sweater used in winters is made up of:

1. jute
2. cotton
3. wool
4. silk

Q.

________ is the natural fibre obtained from coconut husk.

1. Jute

2. Silk

3. Nylon

4. Coir

Q. As compared to nylon, cotton fibres have high:

1. water absorbing capacity
2. stretchability
3. drying time
4. biodegradability

Q.

What do you mean by fibre?

1. A small cloth used to make dresses.

2. Long, thin, thread like strands.

3. Substance used to make plastic cakes.

4. Clothes made by joining fabrics.

Q. Shalu took two pieces of fabrics, X and Y. When brought close to flames, she noticed that X burns with a pungent odour, while Y didn't. What is X and Y?

1. X= Wool, Y= Cotton
2. X= Jute, Y= Polyester
3. X= Polyester, Y= Cotton
4. X= Wool, Y= Nylon

Q. While going for a walk on a hot sunny day, which cloth among the following is most preferred to wear?

1. A jacket made from silk
2. A coat made from jute
3. A t-shirt made from cotton
4. A sweater made from wool

Q. burns with a pungent odour.

1. Cotton
2. Silk
3. Jute
4. Polyester

Q. Choose the correct pair of the substances and their raw materials.

1. 
2. 
3. 
4. Cotton
5. Wool
6. Jute

Q.

Identify the fibres which are obtained from the sources in the figures.


I II III

1. I:- Cotton

   II:- Silk

   III:- Wool

2. I:- Wool

   II:- Cotton

   III:- Silk

3. I:- Cotton

   II:- Wool

   III:- Silk

4. I:- Jute

   II:- Cotton

   III:- Wool

Q. Silk cloth has ____________ which cotton cloth does not.