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CBSE Gujarat Board Haryana Board

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Class 10 Class 12
Distinguish between Aldose sugar and Ketose sugar.

Aldose sugar

Ketose Sugar

(1) It has an aldehyde group.

(2) First carbon forms a part of aldehyde group.

(3) Aldoses are more common in nature e.g. ribose, glucose.

(1) It has a ketone group.

(2) Second carbon forms a part of keto group.

(3) Ketose are less common in nature, e.g. ribulose, fructose.

Name one monosaccharide which provides energy ?


What is the general formula of carbohydrates ?

The carbohydrate has a general formula - CnH2nOn Or (CH2O)n.

Give the names of two monosaccharide sugars.

Fructose and glucose are two monosaccharides

What is the percentage of nucleic acids in cells ?

5 - 7 percent

What are major elements of a cell ?

Carbon, hydrogen, oxygen and nitrogen are the major elements of a cell.