Question

Phenol can be prepared by

• A. Hydrolysis of chlorobenzene with aqueous KOH solution.
• B. Heating sodium salicylate with $(NaOH+CaO)$
• C. Reacting cumene hydroperoxide with dil. $H_{2}S{O}_4$
• D. Heating benzenedizonium chloride with dil.$H_{2}S{O}_4$

Answer 1

Answer: (B), (C), (D)

The correct options are
B Heating sodium salicylate with $(NaOH+CaO)$
C Reacting cumene hydroperoxide with dil. $H_{2}S{O}_4$
D Heating benzenedizonium chloride with dil.$H_{2}S{O}_4$

Reaction is option (A) is not feasible since the ring is not activated without EWG like $N{O}_2$.

All other reactions are feasible and will lead to the formation of phenol.