question_answer

Phenol, when it first reacts with concentrated \[{{\operatorname{H}}_{2}}S{{O}_{4}}\]and then with concentrated nitric acid, gives:

A) Nitrobenzene     

B) 2, 4, 6-trinitrobenzene

C) o-nitrophenol     

D) p - nitrophenol

Correct Answer: C

Solution :

o-nitrophenol \[-S{{O}_{3}}H\]group are knocked out on boiling with\[{{\operatorname{H}}_{2}}O\].