Nylon $-6, 6$ is

Match $List-I$ with $List-II$.

$List-I$ (Polymer)	$List-II$ (Monomer)
$(A)$ Neoprene	$(I)$ Acrylonitrile
$(B)$ Teflon	$(II)$ Chloroprene
$(C)$ Acrilan	$(III)$ Tetrafluoroethene
$(D)$ Natural rubber	$(IV)$ Isoprene

Choose the correct answer from the options given below.

Arrange the following polymers in increasing order of their intermolecular forces.
$(i)$ Nylon $6,6$,Buna$-S$,Polythene.
$(ii)$ Nylon $6$,Neoprene,Polyvinyl chloride.

Phenol and formaldehyde undergo condensation to give a polymer $(A)$ which on heating with formaldehyde gives a thermosetting polymer $(B)$. Name the polymers. Write the reactions involved in the formation of $(A)$. What is the structural difference between the two polymers?

Match the polymer of column-$I$ with correct monomer of column-$II$.

column-$I$	column-$II$
$A$. High density polythene	$i$. Isoprene
$B$. Neoprene	$ii$. Tetrafluoroethene
$C$. Natural rubber	$iii$. Chloroprene
$D$. Teflon	$iv$. Acrylonitrile
$E$. Acrilan	$v$. Ethene

Which of the following polymers is used to obtain surgical sutures?