SBR (GRS, Buna-S, Cold Rubber) is obtain...

SBR (GRS, Buna-S, Cold Rubber) is obtained by free radical copolymerisation of:

1, 3-butadiene and phenyl ethene (styrene)

Chloroprene and styrene

Vinyl acetylene and styrene

Isoprene and 1,3-butadiene

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The correct Answer is:

1, 3-butadiene and phenyl ethene (styrene)

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