Identify the incorrect statement from the following.

Which one of the following phenols does not give colour when condensed with phthalic anhydride in the presence of conc. $H_2SO_4$?

Regarding the solubility of $p$-nitrophenol and salicylaldehyde in a base:

Salicylaldehyde on heating with zinc dust gives . . . . . . as the organic product.

Reaction of phenol with $NaOH$ followed by heating with $CO_{2}$ under high pressure,and subsequent acidification gives compound $X$ as the major product,which can be purified by steam distillation. When reacted with acetic anhydride in the presence of a trace amount of conc. $H_{2}SO_{4}$,compound $X$ produces $Y$ as the major product. Compound $Y$ is $....$

What product is formed when phenol reacts with dilute $HNO_3$?