Question

Vulcanization makes rubber ........

(a) more elastic

(b) soluble inorganic solvent

(c) crystalline

(d) more stiff

Answer 1

Answers: (a), and (d).

Vulcanization makes rubber more elastic and stiffer. On vulcanization sulphur forms cross-links at the reactive sites of double bonds or at their reactive allylic position and thus rubber gets stiffened.