Aldehyde and Ketones (Nature of Carbonyl Group, Nucleophilic Addition to >C=O group,...) NEET Questions

Organic Chemistry - Organic Compounds Containing Oxygen

Aldehyde and Ketones (Nature of Carbonyl Group, Nucleophilic Addition to >C=O group,...) MCQ Questions


13.
Wolff-Kishner reduction converts aldehyde to:
A.
Alcohol
B.
Alkane
C.
Carboxylic acid
D.
None of these
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ANSWER :
B. Alkane
14.
Addition of alcohol to aldehydes under dry HCl forms:
A.
Acetal
B.
Ester
C.
Ether
D.
Amide
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ANSWER :
A. Acetal
15.
Which test can distinguish between acetone and acetaldehyde?
A.
Iodoform
B.
Tollen’s
C.
Fehling’s
D.
All of these
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ANSWER :
D. All of these
16.
Which of these is not formed in aldol condensation?
A.
Enolate ion
B.
Aldol
C.
Alcohol
D.
None of these
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ANSWER :
C. Alcohol
17.
Which aldehyde undergoes Cannizzaro reaction?
A.
Formaldehyde
B.
Acetaldehyde
C.
Propionaldehyde
D.
Butyraldehyde
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ANSWER :
A. Formaldehyde
18.
Addition of ammonia to aldehyde gives:
A.
Imine
B.
Cyanohydrin
C.
Alcohol
D.
Schiff base
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ANSWER :
A. Imine