Question

Which is obtained on treating phenol with cone. $HN{O}_3$ ?

• A.
• B.
• C.
• D. None of the

Answer 1

Answer: (C)

$OH$ group is an activating group and it increase electron density on $o$- and $p$ - position in benzene ring. When phenol reacts with cone. $HN{O}_3$ in the presence of cone. $H_{2}S{O}_4$ , then nitration (electrophilic substitution) takes place and $2,4,6$-trinitrophenol is obtained.

$2,4,6$-trinitrophenol is also called picric acid. It is an explosive.