1.

Buta-N synthetic rubber is copolymer of

Answer»

`H_2C=CH-CH=CH_2 and C_6H_5CH=CH_2`
`H_2C=CH-CN and H_2C=CH-CH=CH_2`
`H_2C=CH-CN and H_2C=CH-UNDERSET(CH_3)underset(|)(C)=CH_2`
`H_(2)C=CH-OVERSET(CI)overset(|)(C)=CH_2 and H_2C=CH-CH=CH_2`

Answer :B


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