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JAMB Chemistry 2025 Objective — Question 34

Question 34 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2025 Objective paper, with the correct answer and a full explanation.

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Which compound is a secondary amine?

  • A. CH₃NH₂
  • B. (CH₃)₂NHCorrect
  • C. (CH₃)₃N
  • D. NH₃

Explanation

A secondary amine has two alkyl groups on nitrogen: (CH₃)₂NH. CH₃NH₂ is primary (one alkyl group); (CH₃)₃N is tertiary (three alkyl groups).

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