Chemical Reactions of Haloalkanes and Haloarenes

Which of the following structures represents a chiral compound?

What kind of reagent would be needed to resolve a racemic amine, such as 2-aminobutane?

Number of chiral centers in the above molecule are:

A pure simple of $2$-chlorobutane shows rotation of PPL by ${30}^{\mathrm{o}}$ in standard conditions. When above samples is made impure by mixing its opposite form, so that the composition of the mixture become $87.5 \%$ $\mathrm{d}$-form and $12.5 \%$ $\mathrm{l}$-form, then what will be the observed rotation for the mixture.

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 –

Benzyl chloride  $\left(C_6{H}_{5}C{H}_{2}Cl\right)$ can be prepared from toluene by chlorination with –

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:

${\left(C{H}_3\right)}_{3}CMgCl$  on treatment with  $D_{2}O$  produces –

${\left({\mathrm{CH}}_3\right)}_3\mathrm{CMgCl}$ on treatment with ${\mathrm{D}}_2\mathrm{O}$ produces:

n–propyl bromide on treatment with ethanolic potassium hydroxide produces