JAMB Chemistry 2011 Objective — Question 46

Question 46 of 49 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2011 Objective paper, with the correct answer and a full explanation.

Which of the following is a primary amine?

A. A. (CH3)2NH
B. B. (CH3)3N
C. C. CH3CH2NH2 (or similar secondary structure)
D. D. CH3-NH2Correct

Explanation

A primary amine has only one alkyl group attached to the nitrogen atom, e.g. CH3NH2. A secondary amine has two alkyl groups, e.g. (CH3)2NH, while a tertiary amine has three, e.g. (CH3)3N.

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