Ethyl chloride on heating with silver cyanide forms a compound $X$. The functional isomer of $X$ is

Given below are two statements:
Statement $I$: The conversion $CH_3-CH_2-CH_2-CH_2-Cl \xrightarrow{OH^{-}} CH_3-CH_2-CH_2-CH_2-OH + Cl^{-}$ proceeds well in a less polar medium.
Statement $II$: The conversion $(CH_3)_3C-Cl \xrightarrow{OH^{-}} (CH_3)_3C-OH + Cl^{-}$ proceeds well in a more polar medium.
In the light of the above statements,choose the correct answer from the options given below.

Enlist the main points of difference between $S_{N}1$ and $S_{N}2$ reactions.

The major product of the following reaction is
$C_6H_5CH_2CH_3 + (CH_3)_2CHCH_2Cl \xrightarrow{AlCl_3} \text{?}$

Write the products of the following reactions:
$(i)$ $C_6H_5CH=CH_2 + HBr \rightarrow$
(ii) $CH_3-CH_2-CH=CH_2 + HCl \rightarrow$
(iii) $C_6H_5CH_2-CH=CH_2 + HBr \xrightarrow{\text{Peroxide}}$

Which among the following has the lowest boiling point?