Biomolecules and Chemistry in Everyday Life 2 Question 14
17. On complete hydrogenation, natural rubber produces
(2016 Adv.)
(a) ethylene-propylene copolymer
(b) vulcanised rubber
(c) polypropylene
(d) polybutylene
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Answer:
Correct Answer: 17. (a)
Solution:
- Natural rubber is formed by polymerisation of isoprene.
This co-polymer is formed from propylene and ethylene.
$n \mathrm{CH}{2}=\underset{\mathrm{CH}{3}}{\mathrm{CH}}+n \mathrm{CH}{2}=\mathrm{CH}{2} \longrightarrow\left[\begin{array}{c}\mathrm{CH}{2}-\underset{\mathrm{CH}{3}}{\mathrm{CH}}-\mathrm{CH}{2}-\mathrm{CH} 2\end{array}\right]{n}$
