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(Given : The solubility product of $\mathrm{Zn}(\mathrm{OH})_{2}$ is $\left.2 \times 10^{-20}\right)$
| List$-I$ | List$-II$ |
| $(A)$ Chloroform and Aniline | $(I)$ Steam distillation |
| $(B)$ Benzoic acid and Napthalene | $(II)$ Sublimation |
| $(C)$ Water and Aniline | $(III)$ Distillation |
| $(D)$ Napthalene and Sodium chloride | $(IV)$ Crystallisation |
$B\xleftarrow{{Pd + CaC{O_3}}}R - C \equiv C - R\xrightarrow{{liq.N{H_3} + Na}}A$
$A$ and $B$ are geometrical Isomers. Then
$(i)$ they are polymers with hydrophobic character
$(ii)$ they are biocompatible
$(iii)$ in general, they have high thermal stability and low dielectric strength
$(iv)$ usually they are resistant to oxidation and used as greases.