Assertion: Electron withdrawing groups in aryl halides decrease the reactivity towards nucleophilic substitution.
Reason: 2,4-Dinitrochlorobenzene is less reactive than chlorobenzene.

Options

A. If both assertion and reason are true and the reason is the correct explanation of the assertion
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If the assertion and reason both are false

Answer

D

Explanation

Halobenzenes become reactive to nucleophilic substitution reactions when electron withdrawing groups (nitro, cyano) are present at ortho/para position. This is evident from the milder conditions required for hydrolysis in 2, 4-dinitrochlorobenzene than chlorobenzene.