alleryNatural rubber is a polymer of:
AEthene
BIsoprene (2-methyl-1,3-butadiene)
CVinyl chloride
DStyrene
Answer & Solution
Correct answer: B. Isoprene (2-methyl-1,3-butadiene)
Natural rubber = cis-1,4-polyisoprene.
**Monomer:** isoprene (CH₂=C(CH₃)-CH=CH₂).
Cis configuration around the double bond gives elasticity.
Gutta-percha is trans isomer (hard, not elastic).
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