The polymer,which can be stretched and retains its original status on releasing the force is ....

What is the structural difference between $HDP$ and $LDP$? How does the structure account for their different behavior,nature,and usage?

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

Arrange the following polymers in increasing order of their intermolecular forces.
$(i)$ Nylon $6,6$,Buna$-S$,Polythene.
$(ii)$ Nylon $6$,Neoprene,Polyvinyl chloride.

Which of the following is a copolymer obtained by condensation polymerization?

Which statement is correct?