Level 2

Order of rate of electrophilic substitution reaction is:

In the reaction, ${\mathrm{C}}_6{\mathrm{H}}_6 \frac{{\mathrm{CH}}_3\mathrm{Cl}}{{\mathrm{AICl}}_3} \mathrm{A}\stackrel{{\mathrm{KMnO}}_4}{ ⟶}\mathrm{B}; \mathrm{B}$ is

The major product obtained on acid-catalysed hydration of $2$ -phenylpropene is

In the following reactions

 the major product $X$ is

The elimination of hydrogen bromide from $2-$bromobutane results in the formation of

$\mathrm{HBr}$ reacts with ${\mathrm{CH}}_2=\mathrm{CH}-{\mathrm{OCH}}_3$ under anhydrous conditions at room temperature to give

The major product formed in the following reaction is:

The nitration of benzene with a mixture of concentrated ${\mathrm{HNO}}_3$ and concentrated ${\mathrm{H}}_2{\mathrm{SO}}_4$ at $333 \mathrm{K}\left(60°\mathrm{C}\right)$ gives____.