Question

Which of the following statements about reducing sugars are true?

• The oxidation of a reducing sugar forms a carboxylic acid sugar.

• A reducing sugar will not react with the Cu^2+ in Benedict's reagent. 

• D-Mannose (an aldose) is a reducing sugar.

• Reducing sugars contain ketone groups instead of aldehyde groups.

• A disaccharide with its anomeric carbons joined by the glycosidic linkage cannot be a reducing sugar.

Answer 1