MHTCET 17 Apr 2026 Shift 1 Paper

Concept:A trihydric phenol is a phenol that contains three hydroxyl ($\mathrm{-OH}$) groups attached directly to a benzene ring.Explanation:Hydroquinone has two $\mathrm{-OH}$ groups, so it is a dihydric phenol.Catechol also has two $\mathrm{-OH}$ groups, so it is a dihydric phenol.$\sigma$-Cresol has one $\mathrm{-OH}$ group and one $\mathrm{-CH}_3$ group, so it is a monohydric phenol.Pyrogallol possesses three $\mathrm{-OH}$ groups on the benzene ring.Its IUPAC name is benzene-1,2,3-triol.Since pyrogallol is the only option with three hydroxyl groups, it is the trihydric phenol.Thus, the correct choice is Option D.Answer:Option D: Pyrogallol