What is the product formed when chloroform reacts with benzene in the presence of $AlCl_3$?

The six carbon atoms of benzene are of:

Benzene was discovered by

$n$-Butylbenzene on oxidation with hot alkaline $KMnO_4$ gives

Which of the following statements are correct with respect to benzene?
$(i)$ It forms triozonide with $O_3$.
$(ii)$ It is non-planar.
$(iii)$ It forms only one monosubstituted product with $CH_3COCl$ in the presence of anhydrous $AlCl_3$.
$(iv)$ It forms hexachlorobenzene on heating with $Cl_2$ under photochemical conditions.

When benzene vapor is passed through a tube at $700 - 800\,^oC$ or over molten lead,it yields ........