The rate of Hydrolysis ( ${\mathrm{S}}_{\mathrm{N}}1$ ) reaction for the given molecules is

(iii) $\mathrm{Ph}-{\mathrm{CH}}_2-\mathrm{Cl}$

(iv) ${\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{Cl}$

 

Which of the following statement/s is/are correct about the mechanism of this reaction?

The correct reactivity order of the following molecules towards nucleophilic substitution reaction is :

$\left(\mathrm{i}\right)\mathrm{Ph}-{\mathrm{CH}}_2-\mathrm{Br}$
$\left(\mathrm{ii}\right)\mathrm{Ph}-{\mathrm{CH}}_2-\mathrm{F}$
$\left(\mathrm{iii}\right)\mathrm{Ph}-{\mathrm{CH}}_2-\mathrm{Cl}$
$\left(\mathrm{iv}\right)\mathrm{Ph}-{\mathrm{CH}}_2-\mathrm{I}$

For the given reaction, rate of substitution $\left({\mathrm{S}}_{\mathrm{N}}2\right)$ is studied for different $\mathrm{R}-\mathrm{X} .$ The rate is expected to be in this order (for different $\mathrm{R}-$group).

$\mathrm{R}-\mathrm{X}+{\mathrm{SH}}^{-}\stackrel{\mathrm{DMSO}}{\to }\mathrm{R}-\mathrm{SH}+{\mathrm{X}}^{-}$

The major product is:

Which of the following is not expected to be the intermediate of the following reaction?

Major Product.