Chemistry - STEREO ISOMERISM Question with Solution | TestHub

Question Explanation:

This question tests the relationship between D-Glucose and L-Glucose and examines how the D/L

configuration of sugars is determined.

Concept :

This question is based on Enantiomers, D–L configuration, Chiral carbon, Fischer projection of

Biomolecules.

Solution : D-Glucose and L-Glucose are non-superimposable mirror images, making them enantiomers.

so the assertion is correct.

L-glucose has –OH group at the last chiral carbon (according to IUPAC numbering) on the left side →

True

In Fischer projection, the D/L notation is determined by the position of the –OH group on the last chiral

carbon (penultimate carbon).

OH on the right → D-form

OH on the left → L-form

Since the Reason correctly describes the structural criterion for identifying the L-form, but it is not the

explanation of the Assertion.

Final Answer: Option (B)