Which of the following reagents can be used to distinguish between phenol and ethanoic acid?

Choose the incorrect option based on the reaction:
$(P)$ + $CH_3-CO-Cl \rightarrow (Q)$
Where $(P)$ is salicylic acid and the structure of $(Q)$ is given as:
$(Q)$ is a benzene ring with an $-OH$ group and a $-COO-CO-CH_3$ group at ortho position.

Arrange the following compounds in decreasing order of their acidic strength:

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

Decarboxylation of sodium salicylate with soda lime forms

Write the structures of the major products expected from the following reactions:
$(a)$ Mononitration of $3-$methylphenol
$(b)$ Dinitration of $3-$methylphenol
$(c)$ Mononitration of phenyl methanoate.