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

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

Number of benzene derivatives of $C_7H_7Cl$ is :

What is the product formed when benzene reacts with isobutylene in the presence of sulfuric acid?

The enthalpy of hydrogenation of benzene is $\Delta H_1$ and for cyclohexene is $\Delta H_2$. Then the resonance energy of benzene is:

In benzene,the $1, 3$ position is called: