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Question
Vulcanisation makes rubber:
(i) more elastic
(ii) soluble in inorganic solvent
(iii) crystalline
(iv) more stiff
Solution
(i) more elastic
(iv) more stiff
Explanation:
Vulcanisation makes rubber more elastic and stiff. On vulcanization sulphur forms cross-links at the reactive sites of double bonds or at their reactive allylic position and thus rubber gets stiffened.
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