Question 1 (Textile Engineering & Fibre Science)
A fibre was heated with soda lime in a test tube. When vapours thus produced were contacted with glass rod dipped in dilute HCl, white fumes were produced, which amongst the following is absent ?
| (A) | Silk |
| (B) | Acrylic |
| (C) | Polypropylene |
| (D) | Nylon |