Which of the following compounds has maximum volatility?

Out of the two compounds $A$ ($p$-nitrophenol) and $B$ ($o$-nitrophenol) shown below,the vapour pressure of $B$ at a particular temperature is expected to be:

The following reaction sequence is given:
Phenol $\xrightarrow{NaOH} X$ $\xrightarrow[(ii) H^+]{(i) CO_2} Y$ $\xrightarrow{(CH_3CO)_2O/H^+} Z + CH_3COOH$
The correct statements about $Z$ from the following are:
$I$. It is $o$-hydroxybenzoic acid.
$II$. It is a non-narcotic analgesic.
$III$. It acts as antipyretic.
$IV$. It acts as antihistamine.

Which of the following compounds gives a pink colour on reaction with phthalic anhydride in conc. $H_2SO_4$ followed by treatment with $NaOH$?

Provide the chemical equation for the bromination of anisole.

Which is the final product of the Reimer-Tiemann reaction?