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Q.

Which is incorrect statement ?

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a

Fructose is reducing sugar

b

Structure of galactose has five carbons and one oxygen in cycle

c

Starch is a polymer of α-D-glucose

d

Amylose is a component of cellulose

answer is B.

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Detailed Solution

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Starch on hydrolysis give amylose and amylopectin, Both are polymeric in nature. Amylose is a polysaccharide made of several D-glucose molecules. They are linked by 1,4-glycosidic bonds also called as ethereal linkage.

Amylopectin is a polymer of several D-glucose molecules. 80% of amylopectin is present in starch. Amylopectin molecules are linked by α-1,4-glycosidic bonds and α-1,6-glycosidic bonds. It is a water-insoluble part.

Hence cellulose cant give amylose.

 

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