In Friedel-Crafts alkylation,besides $AlCl_3$ the other reactants are

$Y$ in the above sequence of reaction is

The number of $\sigma$ and $\pi$ bonds in a molecule of benzene is

$C_6H_6 + A \xrightarrow{AlCl_3} C_6H_5CONH_2$
$A$ in the above reaction is:

What is the correct order of the rate of nitration for the following compounds?
$A. C_6H_5CH_3, B. C_6H_6, C. C_6D_6, D. C_6T_6, E. C_6H_5Br, F. C_6H_5N^+R_3, G. C_6H_5NMe_2$

The correct order of reactivity towards electrophilic substitution for the compounds $(I)$ Aniline,$(II)$ Benzene,and $(III)$ Nitrobenzene is: