Question

Which of the following is not dihydric phenol?

Options

• Hydroquinone

• α-naphthol

• Resorcinol

• Catechol

Answer 1

α-naphthol

Explanation:

Among the given option, α-naphthol is not dihydric phenol. It's a monohydric phenol. Its structure is as follows:

α-naphthol is a fluorescent organic compound with the formula C₁₀H₇OH. In a-naphthol only 1 hydroxy group attached to an aromatic (benzoid) structure.
So, this is not counted as dihydric phenols.