JEE PYQ: Biomolecules And Polymers Question 35
Question 35 - 2020 (09 Jan Shift 2)
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:
(1) A = Glucose, B = Fructose, C = Albumin
(2) A = Lactose, B = Glucose, C = Albumin
(3) A = Lactose, B = Glucose, C = Alanine
(4) A = Lactose, B = Fructose, C = Alanine
Show Answer
Answer: (2)
Solution
Molisch’s test is used to check the presence of carbohydrates while Barfoed test is used for detecting the monosaccharide. Biuret test is used to detect the peptide bonds. Therefore, A and B (monosaccharide) are carbohydrates while C is a protein.
BETA
