Organic Compounds: Acetanilide, p-nitro Acetanilide, Aniline Yellow, Iodoform NEET Questions

Organic Chemistry - Principles of Practical Chemistry

Organic Compounds: Acetanilide, p-nitro Acetanilide, Aniline Yellow, Iodoform MCQ Questions


1.
Acetanilide is prepared by the reaction of aniline with which of the following reagents?
A.
Acetaldehyde
B.
Acetone
C.
Acetyl chloride and KCN
D.
Acetic anhydride
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ANSWER :
D. Acetic anhydride
2.
The IUPAC name of acetanilide is:
A.
N-Acetylbenzene
B.
Phenylacetamide
C.
N-Methylbenzamide
D.
N-Phenylethanamide
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ANSWER :
D. N-Phenylethanamide
3.
Molecular formula of acetanilide is:
A.
C8H11NO
B.
C8H9NO2
C.
C8H9NO
D.
C7H9NO
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ANSWER :
C. C8H9NO
4.
In the preparation of acetanilide, glacial acetic acid is added to:
A.
Act as solvent and catalyst
B.
Reduce aniline
C.
Act as oxidising agent
D.
Convert aniline to anilinium salt only
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ANSWER :
A. Act as solvent and catalyst
5.
Why is zinc dust added during the preparation of acetanilide?
A.
To act as catalyst for acetylation
B.
To prevent oxidation of aniline
C.
To remove water from solution
D.
To increase yield of by-product
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ANSWER :
B. To prevent oxidation of aniline
6.
Acetanilide is recrystallised from which solvent?
A.
Cold ether
B.
Liquid ammonia
C.
Hot water
D.
Concentrated H2SO4
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ANSWER :
C. Hot water