Benzene diazonium chloride on boiling with dilute sulphuric acid gives:

Describe the methods and processes for the production of phenol.

The major product formed in the following reaction sequence is:

The products $X$ and $Z$ in the following reaction sequence are:
$\text{Benzene} + CH_3-CH=CH_2$ $\xrightarrow{AlCl_3/\text{ether}, \text{Heat}} X$ $\xrightarrow{O_2/130^{\circ}C} Z$

You are given benzene,conc. $H_2SO_4$ and $NaOH$. Write the equations for the preparation of phenol using these reagents.

Isopropylbenzene on air oxidation in the presence of dilute acid gives