Synthetic polymer bakelite can be prepared from the following compounds:

Which of the following compounds contain the $-CO-NH-$ linkage?

Among the following,the correct statement$(s)$ about polymers is(are):
$A$. The polymerization of chloroprene gives natural rubber.
$B$. Teflon is prepared from tetrafluoroethene by heating it with persulphate catalyst at high pressures.
$C$. $PVC$ are thermoplastic polymers.
$D$. Ethene at $350-570 \ K$ temperature and $1000-2000 \ atm$ pressure in the presence of a peroxide initiator yields high density polythene.

Which of the following polymers contains an ester linkage?

Match List-$I$ (polymer) with List-$II$ (monomer/s) and select the correct option:
| List-$I$ (polymer) | List-$II$ (monomer/s) |
| :--- | :--- |
| $(A)$ Bakelite | $(I)$ $2$-Methyl-$1,3$-butadiene |
| $(B)$ Natural rubber | $(II)$ Glycine + Aminocaproic acid |
| $(C)$ Glyptal | $(III)$ Phenol + formaldehyde |
| $(D)$ Nylon $2$-Nylon $6$ | $(IV)$ Phthalic acid + ethylene glycol |

Identify the monomers used in the manufacture of glyptal $(X)$, dacron $(Y)$ and nylon $2$-nylon $6$ $(Z)$.