• # question_answer The electrophile in the nitration of benzene is [Orissa JEE 2004] A) $NO_{2}^{+}$ B) $N{{O}_{2}}$ C) $N{{O}^{+}}$ D) $NO_{2}^{-}$

$NO_{2}^{\oplus }$ is produced when conc.$HN{{O}_{3}}$ reacts with conc.${{H}_{2}}S{{O}_{4}}$. $HN{{O}_{3}}+{{H}_{2}}S{{O}_{4}}\to HSO_{4}^{-}+NO_{2}^{\oplus }+{{H}_{2}}O$