What is the decreasing order of reactivity towards electrophilic substitution for the following compounds?
$(1)$ Benzene,$(2)$ Toluene,$(3)$ Chlorobenzene,$(4)$ Phenol

The oxidation of benzene by $V_2O_5$ in the presence of air and high temperature produces

Give the name and structure of the aromatic compound with the molecular formula $C_{10}H_8$. Also,determine the number of $\sigma$ and $\pi$ bonds present in the structure.

Find the decreasing order of reactivity towards electrophilic substitution reaction for the following compounds:
$I$: Toluene $(C_6H_5CH_3)$
$II$: Benzene $(C_6H_6)$
$III$: Anisole $(C_6H_5OCH_3)$
$IV$: Trifluoromethylbenzene $(C_6H_5CF_3)$

Enumerate different aromatic electrophilic substitution reactions and provide the reactions that show how the electrophiles $(E^{+})$ are formed.

Which of the following statements is correct for benzene?