Identify the product of the following reaction:

The products formed in the following reaction sequence are:

Chlorobenzene reacts with bromine gas in the presence of $Anhyd. AlBr_3$ to yield $p-$Bromochlorobenzene. This reaction is classified as . . . . . .

Select the reaction that does $NOT$ represent the correct major product.

Rank the following compounds in order of decreasing rate of reaction with alkoxide ion $(CH_3CH_2O^{-})$ in a nucleophilic aromatic substitution reaction:
$1$. $1$-bromo-$2$-nitrobenzene
$2$. $1$-bromo-$3$-nitrobenzene
$3$. $1$-bromo-$2,4$-dinitrobenzene
$4$. $1$-bromo-$3,4$-dinitrobenzene

Arrange the following groups in increasing order of reactivity towards electrophilic nitration reaction: $C_6H_6, C_6H_5Cl, C_6H_5COOH, C_6H_5NH_2$.