Aryl halides are less reactive than alkyl halides towards nucleophilic substitution reactions due to:

The major product formed in the Friedel-Crafts acylation of chlorobenzene is $p-$chloroacetophenone. Identify the correct structure of the major product.

Which of the following compounds has the most difficulty in breaking the $C-X$ bond?

Assertion : $S_{N}2$ reactions always proceed with inversion of configuration.
Reason : $S_{N}2$ reaction of an optically active aryl halide with an aqueous solution of $KOH$ always gives an alcohol with opposite sign of rotation.

The order of dipole moment for $o-, p-,$ and $m-$dichlorobenzene is............

The displacement of $Cl$ from chlorobenzene to obtain phenol requires strong reaction conditions. However,the chlorine in $2, 4-$ dinitrochlorobenzene is easily displaced because ................