Chemistry - GOC Question with Solution | TestHub

Carbonic acid is stronger than phenol. The ortho effect makes o-methylbenzoic acid stronger than the meta isomer. B is wrong because acetylene is more acidic than ammonia. In D methyl groups adjacent to NO₂ hinder its resonance withdrawal, reversing the printed order. Thus A,C.

Source solution: Steric inhibition of resonance twists the nitro group out of the ring plane. Acetylene is more acidic than ammonia.