From the sugars shown below, which one is a non-reducing sugar?

Question

Quizplus · Accepted Answer

A non-reducing sugar is one that cannot be oxidized or act as a reducing agent in a chemical reaction. In this case, sugar C has a glycosidic bond between the two glucose molecules, which prevents it from being able to open up and participate in a reducing reaction. Therefore, sugar C is the non-reducing sugar. The other three sugars (A, B, and D) all have free hemiacetal groups and can act as reducing agents.

From the Sugars Shown Below, Which One Is a Non-Reducing