MCQ
The correct statement regarding nucleophilic substitution reaction in a chiral alkyl halide is ;
  • A
     Retention occurs in $\mathrm{S}_{\mathrm{N}} 1$ reaction and inversion occurs in $\mathrm{S}_{\mathrm{N}} 2$ reaction.
  • B
    Racemisation occurs in $\mathrm{S}_{\mathrm{N}} \mathrm{l}$ reaction and retention occurs in $\mathrm{S}_{\mathrm{N}} 2$ reaction.
  • C
     Racemisation occurs in both $\mathrm{S}_{\mathrm{N}} 1$ and $\mathrm{S}_{\mathrm{N}} 2$ reactions.
  • Racemisation occurs in $\mathrm{S}_{\mathrm{N}} 1$ reaction and inversion occurs in $\mathrm{S}_{\mathrm{N}} 2$ reaction.

Answer

Correct option: D.
Racemisation occurs in $\mathrm{S}_{\mathrm{N}} 1$ reaction and inversion occurs in $\mathrm{S}_{\mathrm{N}} 2$ reaction.
d
$\mathrm{SN}^1$ - Racemisation

$\mathrm{SN}^2$ - Inversion

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