Which is the final product of the Reimer-Tiemann reaction?

Which of the following compounds has the highest boiling point?

The order of boiling points for the given compounds is:

Identify $X$ and $Y$ in the following reactions:

$A$ compound $x$ reacts with Bromine water and gives a white precipitate. If compound $x$ reacts with $Zn$ dust and forms benzene,then $x$ is:

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.