CBSE Class 12 Chemistry 2016 Delhi Set 1 Solved Paper

Question : 21

Total: 26

(i) Write the name of two monosaccharides obtained on hydrolysis of lactose sugar.
(ii) Why vitamin C cannot be stored in our body?
(iii) What is the difference between a nucleoside and nucleotide?

Solution:

(i) β-D glucose and β-D-galactose / glucose and galactose.
(ii) water soluble, excreted out of the body.
(iii) In nucleotide, phosphoric acid/phosphate group attached to the nucleoside / structures of both nucleotide and nucleoside / nucleotide = base + sugar + phosphate group, nucleoside = base + sugar.

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