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Question

Which of the following compounds is optically active?

A
Butanal
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B
Butanol
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C
Butan2-ol
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D
2-methyl propan2ol
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Solution

The correct option is D Butan2-ol
Only chiral or asymmetric carbon(the carbon four valencies of which are satisfied by four different groups) containing compounds are optically active.
CH3CH2H|C|OHCH3
butan-2ol
(C= chiral carbon atom)
So, butan2ol is optically active.

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