Arrange the following compounds in incrensing order of their rate of reaction towards hydroxyl ion $\left({\mathrm{OH}}^{-}\right)$.

I 

II

III 

IV 

Identify the relation among the rates of following nucleophilic substitution reactions?

The correct order of the following compounds showing increasing tendency towards nucleophilic substitution reaction is:

The product in the above reaction is

The major product of the following reaction is

The rates of reaction of $\mathrm{NaOH}$ with:

follow the order:-

In the following sequence of reactions the $\mathrm{P}$ is: