An amine $(X)$ is prepared by ammonolysis of benzyl chloride. On adding $p-$toluenesulphonyl chloride to it,the solution remains clear. The molar mass of the amine $(X)$ formed is $g \ mol^{-1}$. (Given molar mass in $g \ mol^{-1}$: $C=12, H=1, O=16, N=14, S=32, Cl=35.5$)

Write $IUPAC$ names of the following compounds and classify them into primary,secondary,and tertiary amines.
$(i)$ $(CH_3)_2CHNH_2$
$(ii)$ $CH_3(CH_2)_2NH_2$
$(iii)$ $CH_3NHCH(CH_3)_2$
$(iv)$ $(CH_3)_3CNH_2$
$(v)$ $C_6H_5NHCH_3$
$(vi)$ $(CH_3CH_2)_2NCH_3$
$(vii)$ $m-BrC_6H_4NH_2$

The major product of the following reaction is:

Identify the product $B$ in the following reaction:
$C_6H_5NH_2$ $\xrightarrow[0^\circ-5^\circ C]{NaNO_2/HCl} A$ $\xrightarrow{Ph-N(CH_3)_2} B$

Match List-$I$ with List-$II$:

List-$I$	List-$II$
$A$. Benzenesulphonyl chloride	$I$. Test for primary amines
$B$. Hoffmann bromamide reaction	$II$. Anti Saytzeff
$C$. Carbylamine reaction	$III$. Hinsberg reagent
$D$. Hoffmann orientation	$IV$. Known reaction of isocyanates

Choose the correct answer from the options given below.

How will you convert:
$(i)$ Ethanoic acid into methanamine
$(ii)$ Hexanenitrile into $1$-aminopentane
$(iii)$ Methanol to ethanoic acid
$(iv)$ Ethanamine into methanamine
$(v)$ Ethanoic acid into propanoic acid
$(vi)$ Methanamine into ethanamine
$(vii)$ Nitromethane into dimethylamine
$(viii)$ Propanoic acid into ethanoic acid?