What is the product obtained from the reductive ozonolysis of benzene?

$Y$ in the above sequence of reaction is

Give the reaction for the nitration of benzene.

When toluene is reacted with $Br_2/Fe$,$p$-bromotoluene is formed as the major product because the $CH_3$ group is...

Given the following structures:
$(I)$ $1,3,5-$trimethylbenzene (mesitylene)
$(II)$ $1,3-$dimethyl$-5-$methylenecyclohexa$-1,3-$diene
$(III)$ $1,3,5-$trimethylenecyclohexane
The enthalpy of hydrogenation of these compounds will be in the order as:

Which of the following reactions takes place when a mixture of concentrated $HNO_3$ and $H_2SO_4$ reacts with benzene at $350 \ K$?