Answer: Aromatic primary.
- A Aliphatic primary
- B Aromatic primary
- C Secondary
- D Tertiary
Correct answer: B. Aromatic primary
Explanation: Aniline (C6H5NH2) is an aromatic primary amine.
In aniline, the nitrogen's lone pair is pulled into the benzene ring through resonance, leaving less electron density available to accept a proton - which is why aniline is a much weaker base than methylamine, where the lone pair is fully available.
Concept context
Nitrogen-containing organic compounds. Covers classification (primary, secondary, tertiary), basicity comparison, preparation methods, and reactions including diazotization and coupling, key for understanding dyes and pharmaceuticals.