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Question
Chemistry
Benzaldehyde on treatment with ethanolic KCN produce:
Q. Benzaldehyde on treatment with ethanolic KCN produce:
1813
204
Bihar CECE
Bihar CECE 2002
Aldehydes Ketones and Carboxylic Acids
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A
C
6
H
5
COCO
C
6
H
5
B
C
6
H
5
C
H
O
H
CN
C
C
6
H
5
C
H
O
H
COO
H
D
C
6
H
5
C
H
O
H
CO
C
6
H
5
Solution:
When 2 molecules of aromatic aldehydes condense in presence of alc. KCN, it is called benzoin condensation
benzaldehyde
2
C
6
H
5
C
H
O
K
CN
(
a
l
c
)
benzoin
C
6
H
5
C
H
O
H
−
CO
−
C
6
H
5