The oxidation of phenol with chromic acid gives

The nitration of phenol with dilute $HNO_3$ at low temperature yields a mixture of two isomers $(A)$ and $(B)$. Product $(A)$ is more volatile than product $(B)$. Identify $(A)$.

Provide the alkylation and acylation reactions of anisole.

Benzoic acid and salicylic acid can be distinguished by

The major product of the following reaction is:

The order of stability of the conjugate base of the given acids is:
$(i)$ Phenol
(ii) $4-$Hydroxypyridine
(iii) Cyclohexanol