Q. Amongst the following compounds, the optically active alkane having lowest molecular mass is
A) $CH_{3} - CH_{2} - CH_{2} - CH_{3}$
B) $\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ CH_{3}$
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$CH_{3} - CH_{2} - CH - CH_{3}$
C) [image:12_image261.emf]
D) $CH_{3} - CH_{2} - C \equiv CH$
Explanation
(c)
[image:12_image506.emf] contains asymmetric carbon, thus optically active.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.