$A$ polymer with high chemical stability has a melting point $(M.P.)$ of $327\ ^\circ C$ and the density of a completely crystalline sample is $2.3\ g/cm^3$. It is:

Which of the following polymers is obtained using $CH_2=CHCl$ as a monomer?

Assertion : Bakelite is a thermosetting polymer.
Reason : Bakelite can be melted again and again without any change.

Given below are two statements $:$
Statement $I :$ Wet cotton clothes made of cellulose$-based$ carbohydrate take a comparatively longer time to dry than wet nylon polymer$-based$ clothes.
Statement $II :$ Intermolecular hydrogen bonding with water molecules is more in nylon$-based$ clothes than in the case of cotton clothes.
In the light of the above statements,choose the correct answer from the options given below $:$

Which of the following is a completely fluorinated polymer?

Ethylene-propylene rubber $(EPR)$ is: