Relation between D-Glucose & D-Fructose is

Glucose & fructose are.

What is the relation between D-glucose and L-glucose? Among D-glucose & L-glucose, which one provides energy to the body?

How can you differntiate between D-glucose and D-fructose using Tollens' reagent or fehling's solution?

Which of the following reagents cannot be used for differentiation between glucose and fructose ?

Which of the following reagents cannot be used for differentiation between glucose and fructose ?

Similarities between D(+) Glucose and D(-) Fructose : correct statements:

Glucose and fructose are :