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:
A = Lactose, B = Glucose, C = Albumin
A = Lactose, B = Fructose, C = Alanine
A = Lactose, B = Glucose, C = Alanine
A = Glucose, B = Fructose, C = Albumin
As we have learnt,
Molisch's Test is used to detect Carbohydrates
Barfoed Test is used to distinguish between Monosacharides and Disaccharides
Biuret Test is used for the detection of peptide linkages (amide linkages) in amino acids
The given tests and the compounds giving positive and negative tests are tabulated below:
Compound | Molisch's test | Barfoed test |
Biuret test |
Positive Test | Lactose, Glucose, Fructose | Glucose |
Albumin |
Negative Test | Sucrose |
Alanine |
Hence, the option number (1) is correct.
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