Question

Which of the following can be repeatedly soften on heating?
(i) Polystyrene

(ii) Melamine
(iii) Polyesters

(iv) Polyethylene
(v) Neoprene

• A. (i) and (ii)
• B. (i) and (iv)
• C. (iii) , (iv) and (v)
• D. (ii) and (iv)

Answer 1

The correct option is B (i) and (iv)

(B) (i) and (iv)

Polystyrene and polyethylene

soften on heating and are

linear array of branched long

chains.