Question

Buna-N synthetic rubber is a copolymer of :
(a) H₂C = CH – CH = CH₂ and H₅C₆ – CH = CH₂
(b) H₂C = CH – CN and H₂C = CH – CH = CH₂
(c) H₂C = CH – CN and H₂C = CH –C = CH₂
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CH₃
Cl
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(d) H₂C = CH – C =CH₂ and H₂C = CH – CH = CH₂

Answer 1

Answer:

H₂C = CH – CN and H₂C = CH –C = CH₂ is the correct answer

Answer 2

Buna-N synthetic rubber is a copolymer of

(b)  H₂C = CH – CN and H₂C = CH – CH = CH₂

Buna-N, a synthetic rubber, is obtained by the copolymerization of 1,3-butadiene and acrylonitrile in presence of a peroxide catalyst.

1,3-butadiene is H₂C = CH – CH = CH₂ and acrylonitrile is H₂C = CH – CN.

nH₂C = CH – CH = CH₂ + nH₂C = CH – CN → (-H₂C -CH =CH -CH₂ -CH₂-CH-CN-)n

The product obtained is Buna-N.

So, option (B) is correct.