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

$\begin{matrix}
   \begin{matrix}
   \,\,\,\,\,C{{H}_{3}}  \\
   |  \\
\end{matrix}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{3}}-C-C{{H}_{2}}C{{H}_{2}}OH  \\
   |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
\end{matrix}$ $\xrightarrow[{{H_2}O,heat}]{{{K_2}C{r_2}{O_7};{H_2}S{O_4}}}A$ $\xrightarrow{{SOC{l_2}}}B\xrightarrow[{(2{\kern 1pt} mole)}]{{{{(C{H_3})}_2}NH}}C$ $\xrightarrow[{2.{\kern 1pt} {H_2}O}]{{\begin{array}{*{20}{c}}
  {1.{\kern 1pt} LiAl{H_4}} \\ 
  {diethyl{\kern 1pt} {\kern 1pt} ether} 
\end{array}}}D$

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

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

ઉપરની ત્રણ પ્રક્રિયામાં શું સમાનતા જોવા મળે છે ?