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Common Monosaccharides

Sugar in urin...

Question

Sugar in urine sample can be detected by:
I : Fehling's solution
II : Benedict's solution
III : Tollen's solution
Select the correct alternative.

I, II, III

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I, III

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I, II

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II, III

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Solution

The correct option is A I, II, III
The sugar present in the urine sample is glucose.
It contains an aldehyde group.
Hence, it gives the reactions that are characteristics of an aldehyde group. These include, the reactions with Fehling's solution, Benedict's solution and Tollen's reagent.
Hence, sugar present in the urine sample can be detected by using all the three reagents.

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