Question

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`
A. (I)
B. (I),(II),(III)
C. (II),(III)
D. (I),(III)

Answer 1

Correct Answer - A
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.