Which one of the following statements is not true?

Question

Canvas Classes · Accepted Answer

Statement (a) is incorrect. Lactose is a disaccharide composed of -D-galactose and -D-glucose. The linkage between these two monosaccharide units is a -glycosidic linkage formed specifically between the C1 of -D-galactose and the C4 of -D-glucose. It does not contain an -glycosidic linkage.
The other statements are correct: lactose is a reducing sugar, yields glucose and galactose on hydrolysis, and being a disaccharide formed by standard condensation, retains 8 free hydroxyl groups overall.

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