Which product is obtained by the oxidation of ethylbenzene with $KMnO_4$?

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

For a compound with molecular formula $C_7 H_8 O$,how many aromatic structures are possible?

The rate of $o-$nitration of the following compounds,$(I)$ toluene,$(II)$ $2-D-$toluene,and $(III)$ $2,6-D_2-$toluene,is in the following order:

Suggest the name of a Lewis acid other than anhydrous aluminium chloride which can be used during the ethylation of benzene.

In electrophilic aromatic substitution reactions of chlorobenzene,the $ortho/para$-directing ability of chlorine is due to its