1. What is the functional group present in a primary amine?
A.
-NH2
B.
-NO2
C.
-CONH2
D.
-CN
Correct Answer:
-NH2
Explanation:
A primary amine contains the amino group -NH2 attached to an alkyl or aryl group.
2. Which of the following is a primary amine?
A.
CH3NH2
B.
(CH3)2NH
C.
(CH3)3N
D.
CH3CONH2
Correct Answer:
CH3NH2
Explanation:
Methylamine, CH3NH2, has one alkyl group attached to the nitrogen atom, so it is a primary amine.
3. Which of the following is a secondary amine?
A.
CH3NH2
B.
(CH3)2NH
C.
(CH3)3N
D.
NH3
Correct Answer:
(CH3)2NH
Explanation:
Dimethylamine, (CH3)2NH, has two alkyl groups attached to nitrogen and is therefore a secondary amine.
4. Which of the following is a tertiary amine?
A.
CH3NH2
B.
(CH3)2NH
C.
(CH3)3N
D.
NH2CH2CH3
Correct Answer:
(CH3)3N
Explanation:
Trimethylamine, (CH3)3N, has three alkyl groups attached to the nitrogen atom, making it a tertiary amine.
5. A simple amine containing one alkyl group attached to nitrogen is classified as a:
A.
Primary amine
B.
Secondary amine
C.
Tertiary amine
D.
Quaternary ammonium salt
Correct Answer:
Primary amine
Explanation:
A primary amine has one alkyl group attached to nitrogen, along with two hydrogen atoms.
6. A simple amine containing two alkyl groups attached to nitrogen is classified as a:
A.
Primary amine
B.
Secondary amine
C.
Tertiary amine
D.
Quaternary ammonium salt
Correct Answer:
Secondary amine
Explanation:
A secondary amine contains two alkyl groups and one hydrogen atom attached to the nitrogen atom.
7. A simple amine containing three alkyl groups attached to nitrogen is classified as a:
A.
Primary amine
B.
Secondary amine
C.
Tertiary amine
D.
Amide
Correct Answer:
Tertiary amine
Explanation:
A tertiary amine contains three alkyl groups attached to the nitrogen atom and has no N-H bond.
8. What is the common name of CH3NH2?
A.
Methylamine
B.
Dimethylamine
C.
Trimethylamine
D.
Methanamide
Correct Answer:
Methylamine
Explanation:
CH3NH2 is an amine derived from one methyl group and is commonly called methylamine.
9. What is the common name of (C2H5)2NH?
A.
Ethylamine
B.
Diethylamine
C.
Triethylamine
D.
Ethanamide
Correct Answer:
Diethylamine
Explanation:
The formula (C2H5)2NH contains two ethyl groups attached to nitrogen, so it is called diethylamine.
10. Which formula represents a simple primary amine with an ethyl group?
A.
C2H5NH2
B.
(C2H5)2NH
C.
(C2H5)3N
D.
C2H5CONH2
Correct Answer:
C2H5NH2
Explanation:
Ethylamine, C2H5NH2, contains one ethyl group attached to the amino group and is therefore a simple primary amine.
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