Phenol is less acidic than

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

The acidic nature of phenol is due to which of the following?

Which of the following is $NOT$ a dihydric alcohol (or dihydric phenol)?

Match the reaction in Column-$I$ with the product in Column-$II$.

Column-$I$ (Reaction)	Column-$II$ (Product)
$(A)$ Dinitration of $4$-methylphenol	$(i)$ $2$-nitro-$4$-methylphenol + $2$-nitro-$5$-methylphenol
$(B)$ Mononitration of phenyl ethanoate	$(ii)$ $2,4$-dinitro-$5$-methylphenol
$(C)$ Dinitration of $3$-methylphenol	$(iii)$ $4$-nitrophenyl ethanoate
$(D)$ Mononitration of $3$-methylphenol	$(iv)$ $2,6$-dinitro-$4$-methylphenol

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