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1

AIPMT 2006

MCQ (Single Correct Answer)
Nucleophilic addition reaction will be most favoured in
A
CH3CHO
B
C
(CH3)2C $$=$$ O
D
CH3CH2CHO

Explanation

Aldehydes are more reactive than ketones due to +I effect of –CH3 group. There are two –CH3 group in acetone which reduces +ve charge density on carbon atom of carbonyl group. More hindered carbonyl group too becomes less reactive. So in the given case CH3CHO is the right choice.
2

AIPMT 2006

MCQ (Single Correct Answer)
A carbonyl compound reacts with hydrogen cyanide to form cyanohydrin which on hydrolysis forms a racemic mixture of $$\alpha $$-hydrixy acid. The carbonyl compound is
A
formaldehyde
B
acetaldehyde
C
acetone
D
diethyl ketone

Explanation

3

AIPMT 2005

MCQ (Single Correct Answer)
In a set of reactions acetic acid yielded a product D.

The structure of D would be
A
B
C
D

Explanation

4

AIPMT 2005

MCQ (Single Correct Answer)
The major organic product formed from the following reaction :


is
A
B
C
D

Explanation

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Class 12