Compound $A$ gives $D$-Galactose and $D$-Glucose on hydrolysis. The compound $A$ is:

The fructose molecule in sucrose exists as:

Assertion $(A)$: Both Glucose and Fructose have the same $D$-configuration.
Reason $(R)$: Both Glucose and Fructose are dextrorotatory.
The correct option among the following is:

Which of the following does not show mutarotation?

The correct systematic name of 'sucrose' is:

Glucose gives a silver mirror with Tollen's reagent. It shows the presence of: