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8.1. Aldehydes and ketones — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistry8.1. Aldehydes and ketones1 Mark
MCQ
Acetaldehyde and acetone differ in their reaction with
  • A
    Sodium bisulphite
  • ✓
    Ammonia
  • C
    Phosphorus pentachloride
  • D
    Phenyl hydrazine
✓

Answer

Correct option: B.
Ammonia
b
$\begin{array}{*{20}{c}}
  {C{H_3} - C - H} \\ 
  {\,\,\,\,\,\,||} \\ 
  {\,\,\,\,\,O} 
\end{array}$ $ + \,N{H_3}\, \to $ $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {\,\,\,\,\,\,\,\,\,\,OH} \\ 
  {\,\,\,\,\,\,\,|} 
\end{array}} \\ 
  {C{H_3} - C - H} \\ 
  {\,\,\,\,\,\,\,|} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,N{H_2}} 
\end{array}$

$\begin{array}{*{20}{c}}
  {2C{H_3} - C - C{H_3}} \\ 
  {\,\,||} \\ 
  {\,\,\,O} 
\end{array}$ $ + \,N{H_3}\, \to $ $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} 
\end{array}} \\ 
  {C{H_3} - C - C{H_2} - C - C{H_3}} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {N{H_2}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}$

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