On complete hydrogenation,natural rubber prod | vedclass

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(B) Natural rubber is cis$-1,4-$polyisoprene,which has the structure: $(-CH_2-C(CH_3)=CH-CH_2-)_n$.Upon complete hydrogenation,the double bonds in the

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ethylene propylene copolymer

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(B) Natural rubber is cis$-1,4-$polyisoprene,which has the structure: $(-CH_2-C(CH_3)=CH-CH_2-)_n$.Upon complete hydrogenation,the double bonds in the polymer chain are saturated with hydrogen atoms.The resulting structure is: $(-CH_2-CH(CH_3)-CH_2-CH_2-)_n$.This structure is an alternating copolymer of ethylene $(-CH_2-CH_2-)$ and propylene $(-CH_2-CH(CH_3)-)$ units,commonly referred to as an ethylene-propylene copolymer.Therefore,the correct option is $(B)$.

Column-$I$	Column-$II$
$A$. Acrilan	$i$. $-[CH_2-CH(CN)]_n-$
$B$. Polystyrene	$ii$. $-[CH_2-CH(C_6H_5)]_n-$
$C$. Neoprene	$iii$. $-[CH_2-C(Cl)=CH-CH_2]_n-$
$D$. Novolac	$iv$. $-[CH_2-CH=CH-CH_2-CH_2-CH(CN)]_n-$
$E$. Buna-$N$	$v$. Linear phenol-formaldehyde polymer

On complete hydrogenation,natural rubber produces

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