Which one of the following statements is not true?
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a
Natural rubber has the trans-configuration at every double bond
b
Buna-S is a copolymer of butadiene and styrene
c
Natural rubber is a 1, 4-polymer of isoprene
d
In vulcanization, the formation of sulphur bridges between different chains make rubber harder and stronger
answer is A.
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Detailed Solution
Natural rubber is cis-configuration of 1,4-polyisoprene orbut synthetic rubber obtained by free radical polymerization of isoprene has all trans-configuration.