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Q.

In lactose, the reducing part is

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a

Glucose

b

Fructose 

c

Mannose

d

Galactose 

answer is B.

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Detailed Solution

Lactose is a disaccharide of glucose (reducing part) and galactose (non-reducing part). The reducing part is the part of the compound that has the anomeric carbon free which is C-1 in the case of glucose, which is free from linkage in the disaccharide lactose.

The structure of lactose is as follows.

Question Image

Hence, the correct answer is option B) Glucose.

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