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Byju's Answer
Standard XII
Chemistry
Polysaccharide
Lactose is co...
Question

Lactose is composed of:

A
Glucose + galactose
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B
Fructose + galactose
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C
Glucose + fructose
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D
Glucose + glucose
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Solution

The correct option is A Glucose + galactose
Lactose is popularly know as milk sugar. It is a disaccharide composed of one molecule of glucose and one molecule of galactose. The covalent bond that joins these two monosaccharide units is called a glycoside bond or glycosidic linkage. It is a reducing sugar.

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