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Question

HOOCCH(OH)CH(OH)CH(OH)COOH

What is the number of optically inactive isomers in the given above compound?

  1. 2
  2. 0
  3. 3
  4. 1

A
2
B
3
C
1
D
0
Solution
Verified by Toppr

The two chiral centers present in the molecule has been marked with . There are maximum of four isomers possible 1, 2, 3 and 4. Out of these 1 and 2 are mesomers, 3and 4 are enantiomer pair. Therefore two are optically inactive isomers. Correct option is A.
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