Which of the following polymers is biodegradable?

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

Identify the use of $LDP$ from the following.

Which of the following is Teflon?

Match the following List-$I$ (Monomer/s) with List-$II$ (Name of the polymer) and select the correct answer:
| List-$I$ (Monomer/s) | List-$II$ (Name of the polymer) |
| :--- | :--- |
| $A$. $CF_2=CF_2$ | $I$. Neoprene |
| $B$. $NH_2(CH_2)_6NH_2, HO_2C(CH_2)_4CO_2H$ | $II$. Bakelite |
| $C$. $C_6H_5OH, HCHO$ | $III$. Teflon |
| $D$. $CH_2=CH(Cl)-CH=CH_2$ | $IV$. Nylon $6, 6$ |

Arrange the following in decreasing order of their intermolecular forces:
$(a)$ Nylon $6,6$
$(b)$ Buna-$S$
$(c)$ Polyethene