Which of the following would be least reactive towards bromine?

Identify the major product of the following nitration reaction:

Describe the reaction of chlorobenzene with a hydroxyl group (nucleophilic substitution).

Why do aryl halides undergo electrophilic substitution reactions at $o-$ and $p-$positions? Why are they less reactive than benzene?

The reaction of bromobenzene with bromomethane and sodium metal in dry ether to give toluene is known as:

Which among the following statements is true about the reactivity of haloarenes towards nucleophilic substitution reactions?
$1$. Haloarenes are very reactive towards nucleophilic substitution reaction.
$2$. In haloarenes,the $C-X$ bond acquires partial double bond character.
$3$. The $C-X$ bond in haloarenes is longer than the $C-X$ bond in haloalkanes.
$4$. In haloarenes,the phenyl cation formed as a result of self-ionisation is stable.