The reaction of toluene with chlorine in the presence of light gives

Ring nitration of dimethylbenzene results in the formation of only one nitro dimethylbenzene. The dimethylbenzene is

Which of the following aromatic compounds undergoes sulphonation reaction most easily?

$C_6H_6$ $\xrightarrow{HNO_3, H_2SO_4} X$ $\xrightarrow{Cl_2, FeCl_3} Y$. In the above sequence,$Y$ is:

At what angle are the carbon atoms arranged in a benzene molecule?

The major product formed in the following reaction sequence is:
$C_6H_5-CHBr-CH_2Br$ $\xrightarrow[(ii) NaNH_2]{(i) alc. KOH}$ $\xrightarrow[(iii) \text{Red hot iron tube}, 873 K]{}$