A , B and C are three biomolecules. The results of the tests performed on them are given below: Molisch's test Barfoed Test Biuret Test A Positive Negative Negative B Positive Positive Negative C

Question

A , B and C are three biomolecules. The results of the tests performed on them are given below: Molisch's test Barfoed Test Biuret Test A Positive Negative Negative B Positive Positive Negative C Negative Negative Positive A , B and C are respectively:

TestHub · Accepted Answer

Alanine does not show Biuret test because
Biuret test is used for deduction of peptide
linkage & alanine is amino acid.
Albumine is protein so have paptide linkage
so it gives positive Biuret test.
Positive Barfoed test is shown by
monosaccharide but not disaccharide. Positive
Molisch's test is shown by glucose.

Chemistry - Biomolecules Question with Solution | TestHub

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Doubts & Discussion

	Molisch's test	Barfoed Test	Biuret Test
$A$	Positive	Negative	Negative
$B$	Positive	Positive	Negative
$C$	Negative	Negative	Positive