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(D) Racemisation occurs in $S_N1$ reactions where a chiral carbocation intermediate is formed,allowing the nucleophile to attack from both sides.Compo

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(D) Racemisation occurs in $S_N1$ reactions where a chiral carbocation intermediate is formed,allowing the nucleophile to attack from both sides.Compound $(iv)$,$CH_3CH(Cl)C_2H_5$,is a secondary alkyl halide that can form a stable carbocation and possesses a chiral center,leading to a racemic mixture upon hydrolysis.Compounds $(i)$,$(ii)$,and $(iii)$ are primary alkyl halides. Primary halides typically undergo $S_N2$ reactions,which result in Walden inversion rather than racemisation. Therefore,only $(iv)$ undergoes racemisation.

Which of the following compounds will undergo racemisation when hydrolysed by an aqueous $KOH$ solution?
$(i)$ $C_6H_5CH_2Cl$
$(ii)$ $CH_3CH_2CH_2Cl$
$(iii)$ $(CH_3)_2CHCH_2Cl$
$(iv)$ $CH_3CH(Cl)C_2H_5$

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Which of the following compounds will undergo racemisation when hydrolysed by an aqueous $KOH$ solution?$(i)$ $C_6H_5CH_2Cl$$(ii)$ $CH_3CH_2CH_2Cl$$(iii)$ $(CH_3)_2CHCH_2Cl$$(iv)$ $CH_3CH(Cl)C_2H_5$