Hybridisation shown by Carbon and Oxygen of $-OH$ group in phenol are respectively . . . . . . .

What happens when $phenol$ reacts with bromine water?

What does phenol give with dilute $HNO_3$?

In the given reaction,$[X]$ will be:
$2\text{-hydroxybenzoic acid} \rightarrow{200^{\circ}C} [X]$

Identify product $B$ in the following sequence of reaction:
Aniline $\xrightarrow[273 \ K]{NaNO_2+HCl} A$ $\xrightarrow[\Delta]{H_2O} B + N_2 \uparrow$

One mole of phenol is treated with dilute $HNO_3$ at $298 \ K$ to give a mixture of products. The mixture is separated by steam distillation. The steam volatile compound $(X)$ is separated. The increase in percentage of oxygen in $(X)$ with respect to phenol is . . . . . . $\times 10^{-1}$ %. (Given molar mass in $g \ mol^{-1}$: $H:1, C:12, N:14, O:16$)