The major product obtained in the reaction of toluene with $1-$bromo$-2-$methylpropane in the presence of anhydrous $AlCl_3$ is

The number of chlorine atoms present in the organic products $X$ and $Y$ of the following reactions, respectively, are:
$\text{Benzene} + 6Cl_2 \xrightarrow[\text{dark, cold}]{\text{Anhydr. } AlCl_3} X$
$\text{Benzene} + 3Cl_2 \xrightarrow{UV, 500 \text{ K}} Y$

Observe the following statements regarding $C_{60}$.
$i$. All carbons are $sp^2$-hybridised.
$ii$. It contains $12$ rings of five carbons each and $20$ rings of six carbons each.
$iii$. It is a non-aromatic compound.
$iv$. It is a pure form of carbon.
$v$. $C-C$ bond lengths in it are $143.5 \ pm$ and $138.3 \ pm$.
$vi$. It is prepared by heating graphite in an electric arc in the presence of oxygen.
The correct statements are

The number of possible isomers of dichloro-nitrobenzene is

Among the xylenes,which is thermodynamically most stable?

Hydrogenation of $C_6H_5CHOHCOOH$ over $Rh-Al_2O_3$ catalyst in methanol gives: