Question

which of these are not a natural fibre. (a) cotton (b). silk (c) wool. (d) leather

Answer 1

hey friend,
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Q. WHICH OF THESE ARE NOT A NATURAL FIBRE ?

a. Cotton : Yes it is a natural fibre which is extracted from cotton plant.

b. Silk : Yes it is a natural fibre which is extracted from the cocoon of silkworm.

c. Wool : Yes it is natural fibre which is extracted from the fleece of sheep.

d. Leather : No, it is not a natural fibre as it can't be used to make fabric.
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Answer 2

Leather is synthetic fibres