Question
Short note on :Lactose

Answer

It is more commonly known as milk sugar since this disaccharide is found in milk.
It is composed of ẞ-D-galactose and ẞ-D-Glucose
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The linkage is between C1 of galactose and C4 of glucose.
Free aldehyde group may be produced at C-1 of glucose unit, hence it is also a reducing sugar.
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