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The number of ketotetroses with respect ...

The number of ketotetroses with respect to constitution and configuration are respectively.

A

2 and 2

B

3 and 6

C

1 and 2

D

2 and 4

Text Solution

Verified by Experts

The correct Answer is:
C
Ketotetrose has the following structure:
`HOCH_(2)COC HOHCH_(2) OH`
It has just one asymmetric `C` atom reuslting into a pair of enantiomers (two optically active isomer): `D-` and `L-` erythrulose.
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