Benzene cannot undergo

Choose the best method to prepare the given compound:

In benzene,the $C-C-C$ and $C-C-H$ bond angles are.........

Complete the following reactions and identify $A, B, C$ respectively:
$(i)$ $\text{Phenol} + A \xrightarrow{\text{distill}} \text{Benzene}$
(ii) $\text{Benzenesulfonic acid} + B \xrightarrow{150-200^{\circ}C, \text{HCl, high pressure}} \text{Benzene}$
(iii) $\text{Chlorobenzene} \xrightarrow{C, \text{NaOH}} \text{Benzene}$

Identify the product $(C)$ from the given reaction sequence.

When $o$-xylene is oxidized in the presence of $V_2O_5$,the product is: