Which of the following alcohol shows optical isomerism?
A
Butan-2-ol
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B
Methanol
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C
Ethanol
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D
Propan-1-ol
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Solution
The correct option is C Butan-2-ol Optical isomerism is shown by butan-2-ol. It exists as a pair of enantiomers. It has one chiral C atom (marked with asterisk) to which four different atoms/ groups are attached.