Q. Which of the following is most likely to show optical isomerism?
A) $\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ H$
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$HC \equiv C - \ C - C \equiv CH$
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Cl
B) $\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ H$
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$HC \equiv C - \ \ C - {CH}_{3}$
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Cl
C) $\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ H$
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$HC \equiv C - \ C - H$
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Cl
D) $\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ Cl$
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$HC \equiv C - C = CH_{2}$
Explanation
(b)
Optical isomerism is shown by compounds which have one or more chiral carbon atoms.
[image:12_image478.emf]
$\because$ It has asymmetric or chiral carbon atom.
∴ It shows optical isomerism.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.