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Standard XII
Chemistry
Reductions Involving Aldehydes or Ketones
In the Rosenm...
Question
In the Rosenmund's reduction,
B
a
S
O
4
taken with catalyst Pd acts as
A
Promotor
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B
Catalytic poison
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C
Cooperator
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D
Absorber
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Solution
The correct option is
B
Catalytic poison
barium sulfate has a low surface area which reduces the activity of the palladium, preventing over-reduction.
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Similar questions
Q.
In the Rosenmund's reduction,
B
a
S
O
4
taken with catalyst Pd acts as
Promotor
Catalytic poison
Cooperator
Absorber
Q.
Catalytic poison in Rosenmund's reduction is :
Q.
Match List-1 (Name of the reaction) with column-2 (Reagent used).
List-1 List-2
Name of the reaction
Reagent used
1. Rosenmund's reduction
A. Zn-Hg/Conc. HCl
2. Wacker Process
B
.
N
H
2
−
N
H
2
+
K
O
H
+
(
C
H
2
O
H
)
2
3. Clemmensen's reduction
C
.
P
d
C
l
2
+
C
u
C
l
2
/
H
2
O
4. Wolff- Kishner reduction
D.
P
d
−
B
a
S
O
4
/Quinoline +S
Q.
Reduction of acetyl chloride with
H
2
in presence of Pd and
B
a
S
O
4
gives :
Q.
The reduction of benzoyl chloride with
P
d
and
B
a
S
O
4
/
C
a
S
O
3
produces :
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