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

What is the final product of the nitration of toluene?

Benzene on nitration gives nitrobenzene in the presence of a mixture of $HNO_3$ and $H_2SO_4$,where:

What is the product obtained when $n$-hexane is passed over a heated catalyst (chromium oxide supported on alumina) at $750 \ K$?

$A$ and $B$ are isomers. Product $B$ is: (Dewar's Benzene is $A$)

In the following reactions,$X$ and $Y$,respectively,are