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Which one of the following statements is not true?

(a) Buna-S is a copolymer of butadiene and styrene.

(b) Natural rubber is a 1,4-polymer of isoprene.

(c) In vulcanization, the formation of sulphur bridges between different chains make rubber harder and stronger.

(d) Natural rubber has the trans configuration at every double bond.

1 Answer

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Best answer

Correct option(d) Natural rubber has the trans configuration at every double bond.

Explanation:

Natural rubber is cis-1,3 polyisoprene and has only cis configuration about the double bond as shown below.

whereas in Gutta-percha, only trans-configuration exists about the double bond.

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