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Solution


Q.

Which one given below is a non-reducing sugar                   [2016]
1 Glucose  
2 Sucrose  
3 Maltose  
4 Lactose  

Ans.

(2)

All monosaccharides whether aldoses or ketoses are reducing sugars. Disaccharides such as sucrose in which the two monosaccharide units are linked through their reducing centres. Sucrose is non-reducing because the reducing group of glucose and fructose are involved in glycosidic bond formation.