If aniline is treated with conc. $\mathrm{H}_{2} \mathrm{SO}_{4}$ and heated at $200^{\circ} \mathrm{C}$, the product is

• A

  anilinium sulphate
• B

  benzenesulphonic acid
• C

  maminoberzenesuiphonic acid
• Correct answer
  D

  sulphanilic acid

Solution

When aniline is treated with conc. $\mathrm{H}_{2} \mathrm{SO}_{4}$ followed by heating at $200^{\circ} \mathrm{C}$, the product obtained is sulphanilic acid i.e. $p$ -aminobenzene sulphonic acid

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