Phenol in the presence of sodium hydroxide reacts with chloroform to form salicylaldehyde. This reaction is known as:

Which of the following compounds will give an ester with acid chloride?

The products $X$ and $Y$ which are formed in the following sequence of reactions are respectively:
$\text{Phenol}$ $\xrightarrow{dil \ HNO_3} X$ $\xrightarrow{1. Zn/HCl, \Delta \atop 2.(CH_3CO)_2O (1 \ equiv)} Y$

Cumene on oxidation in air gives a compound,$X$. This on reaction with dilute acid gives $Y$ and $Z$. $Y$ reacts with sodium metal and not $Z$. What is $Z$ ?

The reaction is given as: $X \xrightarrow{Y} \text{Benzoquinone}$. Identify $X$ and $Y$ in the above reaction.

Product $(A)$ and $(B)$ respectively are :-