1.

Which of the following compounds will give racemic mixture on nucleophilic substitution by OH^(-) ion? (I) CH_3-underset(C_2H_5)underset(|)"CH"-Br (II) CH_3-underset(C_2H_5)underset(|)overset(Br)overset(|)C-CH_3 (III) CH_3-underset(C_2H_5)underst(|)(CH)CH_2Br

Answer»

(I)
(I),(II),(III)
(II),(III)
(I),(III)

Solution :In compound (I), Br is DIRECTLY ATTACHED to chiral C atom thus, will give racemic mixture on nucleophilic SUBSTITUTION `(S_N^1)` by `OH^(-)` ion.


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