$C_6H_5NH_2$ $\xrightarrow[\substack{NaNO_2 \\ HCl, 0-5^{\circ}C}]{} X$ $\xrightarrow[CuCl]{HCl} Y$ $\xrightarrow[\text{dry ether}]{CH_3Cl, Na} Z$
What is $Z$ in the sequence of reactions?

Chlorobenzene $(X)$ when reacted with reagent '$A$' gets converted to phenol $(Y)$. The major product obtained from nitration of $X$ gets converted to $p$-nitrophenol $(Z)$ by reaction with reagent $B$. What are $A$ and $B$ respectively?

Identify the product when chlorobenzene is heated with nitrating mixture.

Give the product of the following reaction sequence:

The reaction of toluene with chlorine in the presence of ferric chloride $(FeCl_3)$ gives predominantly:

Heating chlorobenzene with $NaOH$ at $300\,^oC$ under pressure yields ...........