જ્યાં  $\underset{(i)}{\mathop{\gamma =C{{H}_{3}}CO_{2}^{-},}}\,\,\,\,\,\,\underset{(ii)}{\mathop{Cl-C{{H}_{2}}-CO_{2}^{-},}}\,\,\,\,\,\,\,\underset{(iii)}{\mathop{Ph-SO_{3}^{-}}}\,$

$RCN{\mkern 1mu} \xrightarrow{{reduction}}{\mkern 1mu} (a),$

$RCN{\mkern 1mu} {\mkern 1mu} \mathop {\xrightarrow{{(i){\kern 1pt} C{H_3}MgBr}}}\limits_{(ii){\kern 1pt} {H_2}O} {\mkern 1mu} (b),$

$RNC{\mkern 1mu} {\mkern 1mu} \xrightarrow{{hydrolysis}}{\mkern 1mu} {\mkern 1mu} (c),{\mkern 1mu} $

$RN{H_2}{\mkern 1mu} \xrightarrow{{HN{O_2}}}{\mkern 1mu} {\mkern 1mu} (d)$

$(b)\, CH_3COOH +$ સોડા લાઇમ $\rightarrow $

$(c)\, CH_3COOAg + Br_2 \rightarrow$

ઉપરની ત્રણ પ્રક્રિયામાં શું સમાનતા જોવા મળે છે ?