What product is obtained during the hydrogenation of phenol in the presence of a nickel catalyst at $160\,^oC$?

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.

The products formed in the reaction of cumene with $O_2$ followed by treatment with dil. $HCl$ are

Arrange the following phenols in decreasing order of their $pK_{a}$ values:
$(A)$ Phenol
$(B)$ ortho-Nitrophenol
$(C)$ meta-Nitrophenol
$(D)$ para-Nitrophenol

Which of the following reactions is not an electrophilic substitution reaction?

Which of the following will not be soluble in sodium hydrogen carbonate?