$C{{H}_{3}}CN+2H\underset{\text{Ether}}{\mathop{\xrightarrow{HCl}}}\,X\xrightarrow{\text{Boiling }{{H}_{2}}O}Y;$ the term Y is
$I.\,\,CH_2=CHCH_2NH_2$
$II.\,\, CH_3CH_2CH_2NH_2$
$III. CH \equiv CC{H_2}N{H_2}$
${{C}_{2}}{{H}_{5}}N{{H}_{2}} \xrightarrow{HN{{O}_{2}}}A \xrightarrow{PC{{l}_{5}}}B \xrightarrow{H.N{{H}_{2}}}C$
$CH_3CH_2Cl \xrightarrow{NaCN}(i)\xrightarrow{Ni/{{H}_{2}}}(ii)\xrightarrow{acetic\,anhydride}(iii)$ , Product $(iii)$ is


(image) $\xrightarrow[{N{H_4}Cl}]{{Zn}}.....?$