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1

AIPMT 2003

MCQ (Single Correct Answer)
In this reaction :
CH3CHO + HCN $$ \to $$ CH3CH(OH)CN
           $$\buildrel {HOH} \over \longrightarrow $$ CH3CH(OH)COOH
an asymmetric centre is generated. The acid obtained would be
A
$$D$$-isomer
B
$$L$$-isomer
C
50% $$D$$ + 50% $$L$$-isomer
D
20% $$D$$ + 80% $$L$$-isomer

Explanation

2

AIPMT 2002

MCQ (Single Correct Answer)

are
A
resonating structures
B
tautomers
C
geometrical isomers
D
optical isomers.

Explanation

They are resonating forms because the position of the atomic nuclei remain the same and only electron redistribution has occurred.
3

AIPMT 2002

MCQ (Single Correct Answer)
In the following reaction product $$P$$ is
A
RCH2OH
B
RCOOH
C
RCHO
D
RCH3

Explanation

4

AIPMT 2002

MCQ (Single Correct Answer)

In the above reaction product P is
A
B
C
D

Explanation

Grignard reagent forms addition product with bubbled carbondioxide which on hydrolysis with HCl yields benzoic acid.

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