Two statements are given below.Statement I: M | vedclass

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(D) Lactose,i.e.,milk sugar,is composed of a $\beta-D$-galactose unit and an $\alpha-D$-glucose unit joined by a $\beta$-glycosidic linkage between $C

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Statement $I$ is incorrect but statement $II$ is correct

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(D) Lactose,i.e.,milk sugar,is composed of a $\beta-D$-galactose unit and an $\alpha-D$-glucose unit joined by a $\beta$-glycosidic linkage between $C-1$ of galactose and $C-4$ of the glucose unit. Thus,Statement $I$ is incorrect because it mentions $\alpha-D$-galactose instead of $\beta-D$-galactose.Sucrose,i.e.,cane sugar,is composed of $\alpha-D$-glucose and $\beta-D$-fructose units. These units are joined by an $\alpha,\beta$-glycosidic linkage between $C-1$ of glucose and $C-2$ of fructose. Thus,Statement $II$ is correct.

Two statements are given below.
Statement $I$: Milk sugar is a disaccharide of $\alpha-D$-galactose and $\beta-D$-glucose.
Statement $II$: Sucrose is a disaccharide of $\alpha-D$-glucose and $\beta-D$-fructose.
Correct answer is

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Two statements are given below.Statement $I$: Milk sugar is a disaccharide of $\alpha-D$-galactose and $\beta-D$-glucose.Statement $II$: Sucrose is a disaccharide of $\alpha-D$-glucose and $\beta-D$-fructose.Correct answer is