Which is a biodegradable polymer?

Write down the preparation,properties,and uses of Neoprene.

Terylene is the polyester of

Match the polymers given in Column-$I$ with their repeating units given in Column-$II$.

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

Nylon$-66$ is not a

Given $A = \text{Nylon-}6,6$,$B = \text{Buna-}S$,and $C = \text{Polythene}$. Arrange these polymers in the increasing order of their intermolecular forces (from weakest to strongest).