Chemical Reactions of Haloalkanes

What is the order of reactivity of following compounds towards  $S_N{}^1$ substitutions reaction.
(i) 

(ii) 

(iii) 

What is the order of reactivity of following compounds towards  ${\mathrm{S}}_{\mathrm{N}}1$ substitution reaction.

Which one of the following two substances undergoes ${\mathrm{S}}_{\mathrm{N}}1$ reaction faster?

(i)    or   (ii) 

(CH₃)₃CMgCl on reaction with D₂O produces –

An S_N2 reaction at an asymmetric carbon of a compound always gives:

A solution of (+) -2-chloro-2-phenylethane in toluene racemises slowly in the presence of small amount of  $SbC{l}_5$ , due to the formation of –

A solution of (+) -2-chloro-1-phenylethane in toluene racemises slowly in the presence of small amount of  ${\mathrm{SbCl}}_5$, due to the formation of:

n–propyl bromide on treatment with ethanolic potassium hydroxide produces

The major product of the following reaction is

The product of following reaction is –

${\text{C}}_2{\text{H}}_5{\text{O}}^{-}+\text{C}{\text{H}}_3\text{C}{\text{H}}_2\text{I}\to$

In the reaction, ${\mathrm{CH}}_3\mathrm{Br} \stackrel{\mathrm{KCN}}{⟶} \mathrm{A} \stackrel{{\mathrm{H}}^{+}}{\to } \mathrm{B} \stackrel{{\mathrm{LiAlH}}_4}{⟶} \mathrm{C}$

The product C is.

Following reaction${\left({\mathrm{CH}}_3\right)}_3\mathrm{CBr}+{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}\to {\left({\mathrm{CH}}_3\right)}_3{\mathrm{COC}}_2{\mathrm{H}}_5+\mathrm{HBr}$ an example of:

In which step, inversion occurs:

The major product formed is

P is 

The major product in the above reaction is