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