1. Tardigrade
  2. Question
  3. Chemistry
  4. Assertion: D-glucose is dextrorotatory whereas L-glucose is laevorotatory. Reason: D-compounds are always dextro and L-compounds are always laevorotatory.

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Q. Assertion : $D$-glucose is dextrorotatory whereas $L$-glucose is laevorotatory.
Reason : $D$-compounds are always dextro and $L$-compounds are always laevorotatory.

Biomolecules

Solution:

$D$ and $L$ have no relation with the optical rotation. Carbohydrate having $D$ configuration may be either dextrorotatory or laevorotatory e.g., $D$ glucose is dextrorotatory while $D$-fructose is laevorotatory.