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MHT CET202523 Apr 2025Evening ShiftChemistryAminesActual

Identify secondary amine from following.

Options

  1. APhenylmethanamine
  2. BN -Methylethanamine
  3. CN,N-Dimethylethanamine
  4. DProp-2-en-1-amine

Correct answer

B. N -Methylethanamine

Step-by-step solution

Secondary amines contain a nitrogen atom bonded to two alkyl or aryl groups and one hydrogen atom, with general formula R₂NH . Analyzing the structures: A) Phenylmethanamine ( C₆H₅CH₂NH₂ ) features nitrogen bonded to one carbon and two hydrogens, making it primary. B) N-Methylethanamine ( CH₃CH₂NHCH₃ ) shows nitrogen bonded to two carbons (ethyl and methyl) and one hydrogen, confirming secondary amine structure. C) N,N-Dimethylethanamine ( CH₃CH₂N(CH₃)₂ ) contains nitrogen bonded to three carbon atoms, indicating t

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