Question

3. Silk fibre is obtained from______

whereas artificial silk is obtainedby
chemical treatment of________​

Answer 1

Silk fibre is obtained from silkworms

whereas artificial silk is obtained by

chemical treatment of wood pulp/cellulose.

Step-by-step explanation:

Artificial silk, or rayon, is made from cellulose, obtained from cotton or wood pulp.

So any one of them in 2nd blank is correct.