Question

Which one of the following is a benzenoid aromatic compound?

• A. Furan
• B. Thiophene
• C. Pyridine
• D. Aniline
• E. Cyclopentadienyl anion

Answer 1

Answer: (D)

Only aniline is a benzenoid aromatic compound as only aniline has a benzene ring which satisfy the conditions of an aromatic compound, i.e.

(i) has planar structure (ring).

(ii) has $6\pi$ -electrons.

(iii) all C-atoms belong to the ring resp ${}^2$ -hybridised.