The reaction of phenol with concentrated $HNO_3$ is given by:
Phenol $\xrightarrow{Conc. HNO_3}$ Product
What is the major product?

Compound $'P'$ on nitration with dil. $HNO_{3}$ yields two isomers $(A)$ and $(B).$ These isomers can be separated by steam distillation. Isomers $(A)$ and $(B)$ show the intramolecular and intermolecular hydrogen bonding respectively. Compound $(P)$ on reaction with conc. $HNO_{3}$ yields a yellow compound $'C',$ a strong acid. The number of oxygen atoms present in compound $'C'$ is:

The major product of the following reaction is:

Which of the following substituents will decrease the acidic strength of phenol?

In which of the following,ortho/para substitution by an electrophile is very facile?

$A$ solution of phenol in chloroform when treated with aqueous $NaOH$ gives compound $P$ as a major product. The mass percentage of carbon in $P$ is $..............$ (to the nearest integer)
(Atomic mass : $C = 12$; $H = 1$; $O = 16$)