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Distinguish between Aldose sugar and Ketose sugar.
Answer

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.