Question

In which case the \( \text{NO}_2 \) will attack at the meta position? 

• A. I, II, III
• B. II, IV
• C. I and III only
• D. II only

Hint:

In nitration reactions, \( \text{NO}_2 \) attacks the meta position in the presence of electron-withdrawing groups.

Answer 1

The Correct Option is A

Step 1: Nitration of aromatic compounds.
In electrophilic aromatic substitution reactions, \( \text{NO}_2 \) typically attacks the meta position in compounds that have electron-withdrawing groups attached at the ortho and para positions. Based on the structures, \( \text{NO}_2 \) attacks at the meta position in compounds I, II, and III.
Thus, the correct answer is (1).