In the following reaction the nucleophile $\left({\mathrm{MeO}}^{⊝}\right)$ will displace which of the halogen atom most readily.

Number of possible isomeric products including stereoisomers will be:

Observe the following reaction I and II ${\mathrm{k}}_1, {\mathrm{k}}_1^{\text{'}}, {\mathrm{k}}_2, {\mathrm{k}}_2^{\text{'}}$ are rate constants. Select the correct option(s).

major product of this reaction is.

$\mathrm{X}$ and $\mathrm{Y}$ are:

Identify correct steps representing ${\mathrm{S}}_{\mathrm{N}}1$ mechanism for the cleavage of ether with $\mathrm{HI}$.

The relative rate of acid catalysed dehydration of following alcohols would be:

(I) 

(II) 

(III) 

(IV)