$\mathrm{Na} / \mathrm{NH}_3(\mathrm{I})$ - Thermosetting polymer

$\left(\mathrm{C}_6 \mathrm{H}_5 \mathrm{COO}\right)_2$ - Thermoplastic polymer

$\mathrm{Na} / \mathrm{NH}_3(l)$ - Condensation polymer

$\left(\mathrm{C}_6 \mathrm{H}_5 \mathrm{COO}\right)_2$ - Network polymer

Bio compatible

High thermal stability

Low dielectric strength

Water repelling in nature

A-III, B-V, C-I, D-II

A-I, B-II, C-IV, D-III

A-II, B-IV, C-I, D-III

A-II, B-IV, C-V, D-I

$X$ is HDP and $Y$ is LDP.

$X$ is LDP and $Y$ is HDP.

$X$ is used in the preparation of flexible pipes and $Y$ is used in manufacturing squeeze bottles.

$X$ is used in insulation of electricity carrying wires, $Y$ is used in manufacturing of bottles.