Question

Which of the following compounds will give racemic mixture of nucleophilic substitution by $O{H}^{-}$ ion?
(i) $C{H}_3-\underset{C_2{H}_5}{\underset{|}{CH}}-Br$
(ii) $C{H}_3-\underset{C_2{H}_5}{\underset{|}{\stackrel{Br}{\stackrel{|}{C}}}}-C{H}_3$
(iii) $C{H}_3-\underset{C_2{H}_5}{\underset{|}{CH}}-C{H}_{2}Br$

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

Answer 1

The correct option is A (I)

To exhibits racemic mixture the compound should contain at least one chiral carbon in the compound.

$\ast$ Chiral carbon is an asymmetric carbon that is attached to four different types of atoms or group of atoms.

$\ast$ But all other compound didn't have at least one chiral.

Option A correct.