1. Which of the following is an aromatic amine?
A.
Aniline
B.
Ethylamine
C.
Methylamine
D.
Propylamine
Correct Answer:
Aniline
Explanation:
Aniline is an aromatic amine because the amino group is directly attached to a benzene ring.
2. What is the common name of C6H5NH2?
A.
Aniline
B.
Ethylamine
C.
Benzylamine
D.
Dimethylamine
Correct Answer:
Aniline
Explanation:
C6H5NH2 is aniline, the simplest primary aromatic amine.
3. In an aromatic amine, the nitrogen atom is directly attached to which group?
A.
An aromatic ring
B.
An alkyl chain only
C.
A carbonyl group
D.
A hydroxyl group
Correct Answer:
An aromatic ring
Explanation:
Aromatic amines contain an amino group directly bonded to an aromatic ring, such as a benzene ring.
4. Which of the following is a primary aromatic amine?
A.
Aniline
B.
Diphenylamine
C.
Triphenylamine
D.
Trimethylamine
Correct Answer:
Aniline
Explanation:
Aniline has one aromatic group attached to nitrogen and two hydrogen atoms on nitrogen, so it is a primary aromatic amine.
5. Which compound has an amino group directly bonded to a benzene ring?
A.
Aniline
B.
Benzylamine
C.
Cyclohexylamine
D.
Ethylamine
Correct Answer:
Aniline
Explanation:
In aniline, the -NH2 group is directly attached to the benzene ring. In benzylamine, it is separated from the ring by a -CH2- group.
6. Which of the following is the formula of aniline?
A.
C6H5NH2
B.
C6H5CH2NH2
C.
CH3NH2
D.
C2H5NH2
Correct Answer:
C6H5NH2
Explanation:
Aniline consists of a phenyl group, C6H5-, directly attached to an amino group, -NH2.
7. Which compound is also called phenylamine?
A.
Aniline
B.
Benzylamine
C.
Methylamine
D.
Phenol
Correct Answer:
Aniline
Explanation:
Aniline is also known as phenylamine because it contains a phenyl group directly bonded to an amino group.
8. Which of the following represents a secondary aromatic amine?
A.
Diphenylamine
B.
Aniline
C.
Methylamine
D.
Ammonia
Correct Answer:
Diphenylamine
Explanation:
Diphenylamine has two phenyl groups attached to the nitrogen atom and one hydrogen atom, making it a secondary aromatic amine.
9. What is the name of the aromatic amine with formula CH3C6H4NH2?
A.
Toluidine
B.
Aniline
C.
Benzylamine
D.
Phenylhydrazine
Correct Answer:
Toluidine
Explanation:
CH3C6H4NH2 is toluidine, a methyl-substituted aniline and an aromatic amine.
10. Which structural feature identifies aniline as an aromatic amine?
A.
The -NH2 group is directly attached to a benzene ring
B.
The -NH2 group is attached to an ethyl group
C.
The molecule contains no nitrogen atom
D.
The nitrogen atom is part of a carbonyl group
Correct Answer:
The -NH2 group is directly attached to a benzene ring
Explanation:
Aniline is classified as an aromatic amine because its amino group is directly bonded to the aromatic benzene ring.
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