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Page No 24:

Question 1:

Classify the following fibres as natural or synthetic:

Nylon, wool, cotton, silk, polyester, jute

Answer:

Fibres that are obtained from nature, i.e., from plants and animals are called natural fibres and those made by humans by chemical methods are known as synthetic fibres.

Wool and silk are obtained from animals and cotton and jute are obtained from plants. Hence, they are natural fibres. Nylon and polyester on the other hand are prepared artificially and are therefore synthetic fibres.



Page No 24:

Question 2:

State whether the following statements are ‘true’ or ‘false’:

a) Yarn is made from fibre.

b) Spinning is a process of making fibres.

c) Jute is an outer covering of coconut.

d) The process of removing seeds from cotton is called ginning.

e) Weaving of yarn makes a piece of fabric.

f) Silk fibre is obtained from the stem of a plant.

g) Polyester is a natural fibre.

Answer:

a) Yarn is made from fibre. (True)

b) Spinning is a process of making fibres. (False)

c) Jute is an outer covering of coconut. (False)

d) The process of removing seeds from cotton is called ginning. (True)

e) Weaving of yarn makes a piece of fabric. (True)

f) Silk fibre is obtained from the stem of a plant. (False)

g) Polyester is a natural fibre. (False)



Page No 24:

Question 3:

Fill in the blanks:

(a) Plant fibres are obtained from ________ and ________.

(b) Animal fibres are ________ and ________.

Answer:

(a) Plant fibres are obtained from __fruits__ and __stems__.

(b) Animal fibres are __wool__ and __silk__.



Page No 24:

Question 4:

Cotton and jute are obtained from which parts of plants?

Answer:

Cotton fibres are obtained from the fruit of cotton plants. The fruit of a cotton plant is known as cotton bolls. Jute fibres are obtained from the stem of jute plants.



Page No 24:

Question 5:

Name two items that are made from coconut fibre.

Answer:

Two items that are made from coconut fibre are:

(i) Ropes

(ii) Baskets



Page No 24:

Question 6:

Explain the process of making yarn from fibre.

Answer:

The process of making yarn from fibre is called spinning. The fibres are first drawn out from their source and then twisted into yarn. Two devices used in spinning are takli and charkha.



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