Sarthaks Test
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a) Carbohydrates are classified into monosaccharides, oligosaccharides and polysaccharides.

i) What is the basis of such classification? Explain.

ii) Give an example for an oligosaccharide.

b) Vitamin ‘C’ is a vitamin found in fruits and vegetables. It cannot be stored in our bodies. Why?

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a) i) On the basis of their behaviour on hydrolysis, carbohydrates are divided into three major classes.

1) Monosaccharides: These cannot be hydrolysed further into a simpler unit of polyhydroxy aldehyde or ketone. 

e.g. Glucose, Fructose etc.

2) Oligosaccharides: These carbohydrates which on hydrolysis give 2-10 monosaccharide units. 

e.g. Sucrose

3) Polysaccharides: These are high molecular mass carbohydrates which give many monosaccharide units on hydrolysis. 

e.g. Starch, Cellulose, Glycogen etc. 

ii) Sucrose

b) Vitamin ‘C’ is a water-soluble vitamin and must be supplied regularly in the diet because it are readily excreted in urine and cannot be stored in our body.

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