[Natural rubber has the tr...] Which one of the following statements is not true?

For Competitive Exams

Which one of the following statements is not true?

Natural rubber has the trans–configuration at every double bond

Buna–S is a copolymer of butadiene and styrene

Natural rubber is a 1, 4–polymer of isoprene

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

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