Which are reducing sugars?
I. lactose
II. sucrose
III. glucose
IV. fructose
V. galactose

Question

Quizplus · Accepted Answer

Reducing sugars are those which have a free aldehyde or ketone group and can reduce other compounds or undergo oxidation themselves. Lactose, glucose, fructose, and galactose all have free carbonyl groups and are therefore reducing sugars. Sucrose, on the other hand, is a non-reducing sugar because it contains a glycosidic linkage between glucose and fructose, which does not allow free carbonyl groups to be present. Therefore, the correct answer is B, as it includes all the reducing sugars.

Which Are Reducing Sugars