Glyptals are chiefly employed in

Which of the following polymers contains an ester linkage?

The polydispersity index $(PDI)$ of a polymer is ($\bar{M}_w = \text{weight average molecular mass}$ and $\bar{M}_n = \text{number average molecular mass}$)

Write the full form of $PHBV$. Also,write down its preparation and uses.

Match the polymers in column $- A$ with their main uses in column $- B$ and choose the correct answer.

Column $- A$	Column $- B$
$(A)$ Polystyrene	$(i)$ Paints and lacquers
$(B)$ Glyptal	$(ii)$ Rain coats
$(C)$ Polyvinyl chloride	$(iii)$ Manufacture of toys
$(D)$ Bakelite	$(iv)$ Computer discs

Which among the following polymers is used to manufacture water pipes?