Question

Which is a natural fibre among the following? [0.5 marks]

(a) Rayon
(b) Nylon
(c) Polyester
(d) Silk

Answer 1

Option (d), Silk [0.5 marks]

The fibres that are obtained from natural sources such as plants or animals are known as natural fibres whereas the fibres that are made in laboratories using chemicals are called synthetic fibres or artificial fibres.

Silk is obtained from the cocoons of the silkworm. Therefore, it is a natural fibre.

Nylon and polyester are synthesised using chemicals. Therefore, they are synthetic fibres.

Rayon is obtained from the chemical treatment of the wood pulp (cellulose), a natural substance. Therefore, it is called a semi-synthetic fibre.