Hydrolysis of which compound will give carbolic acid?

Sodium benzene sulphonate reacts with $NaOH$ and then on acidic hydrolysis,it gives

What is $A$ in the following reaction?

Phenol is mainly manufactured from a compound $X$ by subjecting it to oxidation in air followed by treating with dilute acid. Identify the compound $X$.

Describe the methods and processes for the production of phenol.

Which of the following reactions will not yield phenol?