Three fused benzene rings are found in

Total number of aromatic compounds among the following compounds is:

Among the following,the aromatic compound is:

What is the product obtained from the reductive ozonolysis of benzene?

Arrange the following compounds in decreasing order of their reactivity towards electrophilic substitution $(E^{+})$:
$C_6H_5NH_2$,$C_6H_5NHCOCH_3$,$C_6H_6$,$C_6H_5SO_3H$

What type of difference is observed in the hybridization of carbon in benzene during nitration and the formation of the $\sigma$-complex?