1
MCQ (Single Correct Answer)

AIPMT 2007

Reduction of aldehydes and ketones into hydrocarbons using zinc amalgam and conc. HCl is called
A
Cope reduction
B
Dow reduction
C
Wolf-Kishner reduction
D
Clemmensen reduction

Explanation

Clemmensen reduction : Aldehydes and ketones are reduced to the corresponding alkanes by means of amalgamated Zinc and HCl.
2
MCQ (Single Correct Answer)

AIPMT 2006

In a set of reactions propionic acid yielded a compound D.

The structure of D would be
A
CH3CH2NH2
B
CH3CH2CH2NH2
C
CH3CH2CONH2
D
CH3CH2NHCH3

Explanation

3
MCQ (Single Correct Answer)

AIPMT 2006

Self condensation of two moles of ethyl acetate in presence of sodium ethoxide yields
A
ethyl propionate
B
ethyl butyrate
C
acetoacetic ester
D
methyl acetoacetate

Explanation

4
MCQ (Single Correct Answer)

AIPMT 2006

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.

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