The 'middle oil' fraction of coal tar distillation contains

The following compound has four aromatic rings marked as $A$,$B$,$C$ and $D$. Rank them in terms of increasing reactivity towards electrophilic aromatic substitution?

Which position will be attacked most rapidly by the nitronium ion $(NO_2)^+$ when the compound undergoes nitration with $HNO_3 / H_2SO_4$?

In the presence of $AlCl_3$,benzene and $n$-propyl bromide react in a Friedel-Crafts alkylation reaction to form:

The reaction of toluene with chlorine in the presence of light gives

Which type of chemical reactions are given by arene compounds? Give their suitable examples and reactions.