What is the product of the following ${\mathrm{S}}_{\mathrm{N}}2$ reaction?

 

 

The mechanism of ${\mathrm{S}}_{\mathrm{N}}1$ reaction is following the sequence

The statement about sequence on the basis of assumption that $\mathrm{R}$ contains $3$ different groups is:

Which is the correct reaction coordinate diagram for the following solvolysis reaction?

Which of the following products can be obtained by above ${\mathrm{S}}_{\mathrm{N}}1$ reaction?

Give the mechanism of following reaction: 

Mention the type of elimination mechanism in the following reaction: