Nitrobenzene can be prepared from benzene by using a mixture of conc. $\mathrm{HNO}_3$ and conc.…

Nitrobenzene can be prepared from benzene by using a mixture of conc. $\mathrm{HNO}_3$ and conc. $\mathrm{H}_2 \mathrm{SO}_4$. In the mixture, nitric acid acts as a/an -
  1. catalyst
  2. reducing agent
  3. acid
  4. base

Solution

$\mathrm{HNO}_3$ on nitrating mixture acts as a base.

Asked in: NEET 2009 (Mains)

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