In the Friedel-Crafts reaction,anhydrous $AlCl_3$ is used because...

The aromatic compound/species with the maximum number of $\pi$-electrons is:

The starting material for the preparation of styrene is

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

Given below are two statements $:$
Statement $(I) :$ On nitration of $m-$xylene with $HNO_3, H_2SO_4$ followed by oxidation,$4-$nitrobenzene$-1, 3-$dicarboxylic acid is obtained as the major product.
Statement $(II) :$ $-CH_3$ group is $o/p-$directing while $-NO_2$ group is $m-$directing group.
In the light of the above statements,choose the correct answer from the options given below $:$

The order of decreasing reactivity towards an electrophilic reagent for the following compounds is:
$(i)$ Benzene
$(ii)$ Toluene
$(iii)$ Chlorobenzene
$(iv)$ Phenol