Electrophile $\mathrm{NO}_2^{\oplus}$ attacks the following
In which cases, $\stackrel{\oplus}{\mathrm{N}} \mathrm{O}_2$ will be at meta position?

• A

  II and IV
• Correct answer
  B

  I, II and III
• C

  II and III
• D

  Only I

Solution

Electrophile $\stackrel{\oplus}{\mathrm{N}} \mathrm{O}_2$ attacks the following
withdrawing groups. All deactivating and m-directing.

Hence, the correct answer is option: 'B'.