Question

Synthetic fibres are obtained from which of the following?
(A) Plants
(B) Sheep
(C) Chemicals
(D) Jute

Answer 1

(A) Examples of plant fibres are cotton, kapok, jute, flax, hemp, coir, etc.
(B) Sheep are domesticated for thousands of years for their wool.
(C) There are polymerisation reactions which can produce many useful materials for humans.
(D) From the stem of jute plants we get jute fibres.

Complete step by step solution:
(A) From plants we get plant fibres. These are natural fibres as we get these naturally from plant. We get plant fibres from seed, bast (outer covering of stem) and leaves.
Hence, option (A) is incorrect.
(B) Sheep is an animal from which we get wool. The main component of wool is animal protein keratin. Thus, wool is a natural fibre.
Hence, option (B) is incorrect.
(D) From the best of jute plants we get jute fibres. It is one of the most affordable fibre. It is stronger than cotton fibre.
Hence, option (D) is incorrect.
(C) From the polymerisation of certain chemicals, we get synthetic fibres. For example, Nylon-6, 6 is prepared by the condensation polymerisation of hexamethylenediamine with adipic acid under high temperature and high pressure. It is a type of synthetic fibre.

Hence, the correct option is c.

Note: We know that cellulose is obtained from plants. This is used to prepare many fibres including rayon, viscose, etc. Since it is prepared by synthetic means from a natural product, it is considered as a man made or synthetic fibre.