Phenol reacts with chloroform in presence of

• A

  $\mathrm{H}_2 \mathrm{SO}_4$
• Correct answer
  B

  $\mathrm{KOH}$
• C

  $\mathrm{NaNO}_2 / \mathrm{HCl}$
• D

  $\mathrm{G.R}$

Solution

Phenol reacts with chloroform in presence of potassium hydroxide to form salicylaldehyde.

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