The polymer obtained with methylene bridges by condensation polymerisation is:

Terylene is a polymer obtained from

$PMMA$ is a polymer of which of the following?

Which linear polymer is formed when lactide is heated with zinc chloride?

The polymer $X$ consists of linear molecules and is closely packed. It is prepared in the presence of triethylaluminium and titanium tetrachloride under low pressure. The polymer $X$ is -

The monomeric units of terylene are ethylene glycol and which of the following?