First slide
Polysaccharides
Question

Sucrose on complete hydrolysis gives  X and Y.   Lactose on complete hydrolysis gives B and C. If Y and C are not glucose units then X and B are 

Moderate
Solution

X and Y  are  α-glucose and β-fructose respectively.

B and C are  β-glucose and β-galactose respectively.

X and B are anomers.

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