Question

Nitrobenzene on reacting with $HN{O}_3/H_{2}S{O}_4$ mixture will give

• A.
• B.
• C.
• D. Both (b) and (c)

Answer 1

The correct option is A

The given mixture is a nitration mixture which undergoes electrophilic aromatic substitution with aromatic compounds.
In $HN{O}_3/H_{2}S{O}_4$, $H_{2}S{O}_4$ will act as acid and $HN{O}_3$ will act as base to give $N{O}_2^{+}$ electrophile.

In nitrobenzene, the $-N{O}_2$ groups show -R and -I effect which will reduce then electron density at ortho and para position and makes the electrophile to attack at meta position. Thus it is a meta directing group.
Thus, the reaction will give 1, 3 - Dinitrobenzene.