The replacement of $Cl$ in chlorobenzene to form phenol requires drastic conditions,but the chlorine in $2,4-$dinitrochlorobenzene is readily replaced because:

Arrange the following compounds in decreasing order of their reactivity towards electrophilic substitution $(S_E)$ reaction: $I$. Chlorobenzene,$II$. Benzene,$III$. Anilinium chloride,$IV$. Toluene.

Why is $m$-dinitrobenzene obtained from $C_6H_5NO_2$?

How will you convert benzene into:
$(i)$ $p-nitrobromobenzene$
$(ii)$ $m-nitrochlorobenzene$
$(iii)$ $p-nitrotoluene$
$(iv)$ acetophenone

Which of the following compounds has a dipole moment approximately equal to that of chlorobenzene?

Given below are two statements: one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$.
Assertion $(A)$ : Chlorine is an electron withdrawing group but it is ortho,para directing in electrophilic aromatic substitution.
Reason $(R)$ : Inductive effect of chlorine destabilises the intermediate carbocation formed during the electrophilic substitution,however due to the more pronounced resonance effect,the halogen stabilises the carbocation at ortho and para positions.
In the light of the above statements,choose the most appropriate answer from the options given below :