Which of the following is NOT a phenol ?

Step-by-step solution

A phenol is a compound in which a hydroxyl group ( -OH ) is directly attached to an sp^2 hybridized carbon atom of an aromatic ring. In the first option, the -OH group is directly attached to the benzene ring (o-nitrophenol), so it is a phenol. In the second option, the -OH group is directly attached to the naphthalene ring (2-naphthol), so it is considered a phenolic compound. In the third option, the -OH group is directly attached to the benzene ring (o-bromophenol), so it is a phenol. In the fourth option, the -