Q.
How many of the following is/are not optically active amine?
(I) $CH _{3} NH _{2}$
(II) $CH _{3} NHCH _{3}$
(III)$CH_3CH_2CH_2\underset{\overset{|}{CH_3}}{N}-C_2H_5$
(IV) Secondary butylamine
Amines
Solution: