Phenol can be distinguished from ethanol by the reagent

Which of the following is phenolic?

Identify $X$ and $Y$ in the following reaction:
$X \xrightarrow{Y} \text{Benzoquinone}$

What is the product obtained by heating the following allylic ether of phenol?

Arrange the following compounds in increasing order of acidity and provide a suitable explanation: $o-\text{cresol}$,$\text{phenol}$,$o-\text{nitrophenol}$.

$m$-Aminophenol on treatment with $NaOH$ and $CO_2$ gives which of the following as major product?