Fluorobenzene $\left({\mathrm{C}}_6{\mathrm{H}}_5 \mathrm{F}\right)$ can be synthesized in the laboratory

The major product of the reaction is

The following compound reacts with ${\mathrm{Br}}_2/\mathrm{Fe}$ to produce

${\mathrm{CH}}_3{\mathrm{NH}}_2+{\mathrm{CHCl}}_3+\mathrm{KOH}\to$ (Nitrogen containing compound) $+\mathrm{KCl}+{\mathrm{H}}_2\mathrm{O}$.

The nitrogen containing compound is:

What are $\mathrm{P}$ and $\mathrm{Q}$?

In the following reaction, the structure of the major product '$\mathrm{X}$' is

The major product of the following reaction is ___________

In the reaction, the intermediate is