$Cis-1,4-polyisoprene$ is:

Arrange the following polymers in the decreasing order of their intermolecular forces:
$A$. Bakelite
$B$. Teflon
$C$. Buna-$S$
$D$. Nylon-$6,6$

$Buna-S$ is a polymer of .......

Match List-$I$ (polymer) with List-$II$ (monomer/s) and select the correct option:
| List-$I$ (polymer) | List-$II$ (monomer/s) |
| :--- | :--- |
| $(A)$ Bakelite | $(I)$ $2$-Methyl-$1,3$-butadiene |
| $(B)$ Natural rubber | $(II)$ Glycine + Aminocaproic acid |
| $(C)$ Glyptal | $(III)$ Phenol + formaldehyde |
| $(D)$ Nylon $2$-Nylon $6$ | $(IV)$ Phthalic acid + ethylene glycol |

Celluloid is

The degree of crystallinity of which of the following is highest?