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Question

Number of optical isomer of lactic acid are

A
1
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B
2
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C
3
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D
4
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Solution

The correct option is B 2
The structure of lactic acid is :
Only one chiral centre is there in lactic acid. Hence two optical isomers are possible with configuration R and S. These two isomers are non-superimposable mirror images which is called as enantiomers.

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