ઉપરોક્ત પ્રક્રિયાને શું કહે છે ? 

પદ્ધતિ  $1$ : $RBr\xrightarrow[diethyl\,\,ether]{Mg}RMgBr\xrightarrow[2.\,{{H}_{3}}{{O}^{+}}]{1.\,C{{O}_{2}}}RC{{O}_{2}}H$

પદ્ધતિ  $2$ : $RBr\xrightarrow{NaCN}RCN\xrightarrow[heat]{{{H}_{2}}O,HCl}RC{{O}_{2}}H$

નીચેનામાંથી કયું  એક વિધાન આ રૂપાંતરને યોગ્ય રીતે વર્ણવે છે ?

$\underset{1}{\mathop{\begin{matrix}
   O\,\,\,\,\,\,\,\,\,\,\,\,  \\
   ||\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{3}}COCHC{{H}_{3}}  \\
\end{matrix}}}\,$   $\underset{2}{\mathop{\begin{matrix}
   \,\,\,\,O \\
   \,\,\,\,|| \\
   C{{H}_{3}}CCl  \\
\end{matrix}}}\,$   $\underset{3}{\mathop{\begin{matrix}
   O\,\,\,\,\,\,\,\,\,  \\
   ||\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{3}}CNHC{{H}_{3}}  \\
\end{matrix}}}\,$

${C_2}{H_5}I\xrightarrow{{alc. KOH}}X\xrightarrow[{CC{l_4}}]{{B{r_2}}}Y\,\xrightarrow{{KCN}}Z\xrightarrow{{{H_3}{O^ + }}}A$

$[I]$ મિથેનોઇક એસિડ             $[II]$ ઇથેનોઇક એસિડ 

$[III]$ પ્રોપેનોઇક એસિડ            $[IV]$ બ્યુટેનોઇક એસિડ

$(I)$  $PhCOOH$

$(II)$ $o-\, NO_2C_6H_4COOH$

$(III)$ $P-\, NO_2C_6H_4COOH$

$(IV)$ $m-\, NO_2C_6H_4COOH$

નીચે આપેલાં ક્રમ માંથી સાચો ક્રમ કયો હશે ?

$\begin{matrix}
   O\,\,\,\,  \\
   \,||\,\,\,\,  \\
   C{{H}_{3}}-C-Cl\xrightarrow{{{H}_{2}}S}  \\
\end{matrix}$ નીપજ 

$C{H_3}COON{H_4}\xrightarrow{\Delta }X\,\xrightarrow{{{P_2}{O_5}}}\,Y\,\xrightarrow{{{H_2}O/{H^ + }}}\,Z$

$C{H_2}CN\xrightarrow{{Na/{C_2}{H_5}OH}}\,A\,\xrightarrow{{HN{O_2}}}\,B\,\xrightarrow{{C{r_2}O_{_7}^{ - 2}}}\,C$

$\begin{matrix}
   O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   ||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{3}}-C-OH+C{{H}_{3}}-OH\overset{cat.}{\longleftrightarrow}  \\
\end{matrix}\begin{matrix}
   O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   ||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{3}}-C-O-C{{H}_{3}}+{{H}_{2}}O  \\
\end{matrix}$