Question

# Give the structure and IUPAC names of monohydric phenols of molecular formula, ${C_7}{H_8}O$.

Hint: Phenol is formed when a hydrogen atom in a benzene ring is replaced by a hydroxyl group. $- OH$ group is called the hydroxyl group. Monohydric phenols are those which contain only one hydroxyl group.
Complete answer:In this question we have to find all the monohydric phenols of molecular formula ${C_7}{H_8}O$. We know phenols are aromatic compounds in which hydrogen is replaced by a hydroxyl group. In the benzene ring, there are only six carbons but in this question, seven carbons are given this means one hydrogen is replaced by a hydroxyl group and one hydrogen is replaced by some group containing carbon.
Now there is one carbon and three hydrogen atoms and one group to be formed so the only possibility is the methyl group formed by these four atoms. So we have three possible different structures with formula ${C_7}{H_8}O$ that is: