MCQ
Primary nitro compounds when react with $HN{O_2}$ forms crystalline solids which on treatment with $NaOH$ gives
- ✓Red solution
- BBlue solution
- CWhite precipitate
- DYellow colouration
✓
Answer
Correct option: A.
Red solution
a
(a)$\mathop {R - C{H_2} - N{O_2}}\limits_{{1^o}{\text{nitro}}} {\mkern 1mu} \xrightarrow{{HN{O_2}}}$ $\mathop {\begin{array}{*{20}{c}}
{R - C - N{O_2}} \\
{||\,\,\,\,\,\,} \\
{\,\,\,\,\,\,\,N - OH}
\end{array}}\limits_{{\text{Nitroloic acid}}} {\mkern 1mu} $ $\xrightarrow{{NaOH}}$ $\mathop {\begin{array}{*{20}{c}}
{R - C - N{O_{2\,}}\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,\,N - {O^ - }N{a^ + }}
\end{array}}\limits_{{\text{(Blood red)}}} {\mkern 1mu} $
(a)$\mathop {R - C{H_2} - N{O_2}}\limits_{{1^o}{\text{nitro}}} {\mkern 1mu} \xrightarrow{{HN{O_2}}}$ $\mathop {\begin{array}{*{20}{c}}
{R - C - N{O_2}} \\
{||\,\,\,\,\,\,} \\
{\,\,\,\,\,\,\,N - OH}
\end{array}}\limits_{{\text{Nitroloic acid}}} {\mkern 1mu} $ $\xrightarrow{{NaOH}}$ $\mathop {\begin{array}{*{20}{c}}
{R - C - N{O_{2\,}}\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,\,N - {O^ - }N{a^ + }}
\end{array}}\limits_{{\text{(Blood red)}}} {\mkern 1mu} $
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Which of the vitamins given below is water soluble?
The major product $'P'$ formed in this reaction
→Other than the $X-$ ray diffractions, how could be the following pairs of isomers be distinguished from one another by
→$[Cr(NH_3)_6] [Cr(NO_2)_6]$ and $[Cr(NH_3)_4(NO_2)_2] \,[Cr(NH_3)_2(NO_2)_4]$
What will happen during the electrolysis of aqueous solution of CuSO4 by using platinum electrodes?
Reduction potential of four elements $P,\,\,Q,\,\,R,\,\,S$ is $ - \,2.90,\, + \,0.34,\, + \,1.20$ and $ - \,0.76.$ Reactivity decreases in the order
→A student has studied the decomposition of a gas $AB _3$ at $25^{\circ} C$. He obtained the following data.
→| $p ( mm Hg )$ | $50$ | $100$ | $200$ | $400$ |
| Relative $t _{1 / 2}( s )$ | $4$ | $2$ | $1$ | $0.5$ |
The order of the reaction is
Milk sugar is :
Which one is used in the manufacture of mirror
At $40\,^o C$, the vapour pressure (in torr) of methyl alcohol $(A)$ and ethyl alcohol $(B)$ solution is represented by :
$P_s = 120 X_A + 138$ ; where $X_A$ is mole fraction of methyl alcohol. The value of
→$P_s = 120 X_A + 138$ ; where $X_A$ is mole fraction of methyl alcohol. The value of
$\mathop {\lim }\limits_{{X_A} \to 0} \left ( \frac{P_B^0}{X_B} \right )$ and $\mathop {\lim }\limits_{{X_B} \to 0}\left ( \frac{P_A^0}{X_A} \right )$ are
Change occurs in hybridisation state of carbonyl carbon in nucleophilic addition reaction is :