Question

(0) Bakelite of the following (n) Polythene
108. Which of the following is an elastomer?
(a) Bakelite
(b) Polythene
(c) Buna-S
(d) Polystyrene​

Answer 1

Answer:

c

Explanation:

buna-s is an  elastomer

bakelite is a thermosetting polymer

polyethene and polystyrene  are thermoplastic polymer

Answer 2

OPTION IS C

Elastomer, any rubbery material composed of long chainlike molecules, or polymers, that are capable of recovering their original shape after being stretched to great extents—hence the name elastomer, from “elastic polymer.” Under normal conditions the long molecules making up an elastomeric material are irregularly coiled. With the application of force, however, the molecules straighten out in the direction in which they are being pulled. Upon release, the molecules spontaneously return to their normal compact, random arrangement.