Bakelite is an example of

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 polymers in List-$I$ with their monomers in List-$II$ and select the correct match:

List-$I$	List-$II$
$A$. $Nylon$ $6,6$	$i$. $Ethylene$ $glycol$ and $Terephthalic$ $acid$
$B$. $Terylene$	$ii$. $1,3-Butadiene$ and $Styrene$
$C$. $Buna-S$	$iii$. $Chloroprene$
$D$. $Neoprene$	$iv$. $Acrylonitrile$
	$v$. $Adipic$ $acid$ and $Hexamethylenediamine$

The correct match is:

The chemical name of the melamine monomer is ....

Arrange the following in decreasing order of their intermolecular forces:
$(a)$ Nylon $6,6$
$(b)$ Buna-$S$
$(c)$ Polyethene

In the trinitrocellulose,each glucose unit contains how many $-OH$ groups?