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  • A,B and C are three biomolecules. The results of the tests performed on them are given below : <t

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:

Option: 1

A = Lactose, B = Glucose, C = Albumin


Option: 2

A = Lactose, B = Fructose, C = Alanine


Option: 3

A = Lactose, B = Glucose, C = Alanine


Option: 4

A = Glucose, B = Fructose, C = Albumin


Answers (1)

best_answer

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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