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

CBSE BoardEnglish MediumSTD 12 ScienceChemistry8.1. Aldehydes and ketones1 Mark
MCQ
$\begin{array}{*{20}{c}}
  {C{H_3} - C - H} \\ 
  {\,\,\,\,\,||} \\ 
  {\,\,\,\,\,O} 
\end{array} \xrightarrow[{\mathop O\limits^\Theta  H}]{{HCN}}(A)\xrightarrow[{Hydrolysis}]{{Partial}}(B)$

Product $'B'$ is

  • A
    $\begin{array}{*{20}{c}}
      {\,\,CN} \\ 
      {|\,\,} \\ 
      {C{H_3} - CH - OH} 
    \end{array}$
  • B
    $\begin{array}{*{20}{c}}
      {\,\,OH} \\ 
      {|\,\,} \\ 
      {( + )C{H_3} - CH - COOH} 
    \end{array}$
  • C
    Racemic mixture of $\begin{array}{*{20}{c}}
      {OH\,\,\,\,\,\,} \\ 
      {|\,\,\,\,\,\,\,\,\,\,} \\ 
      {C{H_3} - CH - COOH} 
    \end{array}$
  • ✓
    $\begin{array}{*{20}{c}}
      {C{H_3} - CH - CON{H_2}} \\ 
      {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
      {OH\,\,\,\,\,\,\,\,\,\,\,\,\,} 
    \end{array}$
✓

Answer

Correct option: D.
$\begin{array}{*{20}{c}}
  {C{H_3} - CH - CON{H_2}} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {OH\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}$
d
$(A)$ $\begin{array}{*{20}{c}}
  {\,\,\,\,\begin{array}{*{20}{c}}
  {\,\,\,\,\,CN} \\ 
  \,\,\,| 
\end{array}} \\ 
  {C{H_3} - C - H} \\ 
  {\,\,\,\,\,\,\,\,|} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,OH} 
\end{array}$             $(B)$   $\begin{array}{*{20}{c}}
  {C{H_3} - CH - C - N{H_2}} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\ 
  {\,ON\,\,\,\,\,\,\,\,O} 
\end{array}$

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