MCQ
Which of the following is most acidic
- ✓Picric acid
- B$p-$ nitrophenol
- C$m-$ nitrophenol
- D$o-p$ dinitrophenol
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$\begin{array}{*{20}{c}}
\,\,\,{{C_2}{H_5}} \\
{|\,\,\,\,\,\,\,} \\
{C{H_3} - C - COOH} \\
{|\,\,\,\,\,\,} \\
\,\,\,{{C_3}{H_7}}
\end{array}\xrightarrow{{{N_3}H/Conc.\,{H_2}S{O_4}}}\begin{array}{*{20}{c}}
\,\,\,\,\,\,\,\,\,{{C_2}{H_5}} \\
| \\
{C{H_3} - C - N{H_2}} \\
| \\
\,\,\,\,\,\,\,\,\,{{C_3}{H_7}}
\end{array}$
is called :

$\begin{array}{*{20}{c}}
O \\
{||} \\
{C{H_3} - C - C{H_3}}
\end{array}\xrightarrow{{{C_6}{H_5}COOOH}}\begin{array}{*{20}{c}}
{O\,\,\,\,\,\,\,\,\,} \\
{||\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - O - C{H_3}}
\end{array}$
The above reaction is known as :