AIPMT 2008 Physics and Chemistry Paper

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Question : 75 of 100

Marks: +1, -0

Which one of the following statements is not true?

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
Natural rubber has the trans-configuration at every double bond

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