(A) will be - Vidyadip

MCQ

$(A)$ will be

A
$\begin{array}{*{20}{c}}
{OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}\\
{\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}\\
{{C_6}{H_5}CH - C{H_2}CHO}
\end{array}$
✓
$C_6H_5CH = CH -CHO$
C
$C_6H_5CH_2CH_2CHO$
D
Both $(b)$ and $(c)$

✓

Answer

Correct option: B.

$C_6H_5CH = CH -CHO$

b
Aldol formed in aromatic aldehydes itself loses water molecule without heating because double bond formed is more stable due to conjugation with benzene ring. $C_6H_5CH=CHCHO$ is commonly known as cinnamaldehyde

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