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

A = Lactose, B = Glucose, C = Albumin

A = Glucose, B = Fructose, C = Albumin

A = Lactose, B = Glucose, C = Alanine

A = Lactose, B = Fructose, C = Alanine

JEE Main 2020 · ChemistryMultiple choiceSingle correctMediumApplication

JEE Main 9 January 2020, Shift 2, Chemistry Q41

Question 41 of 75 in this shift, Chemistry question 16 of 25, Section A.

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 = Lactose, B = Glucose, C = AlbuminOfficial answer
(2)A = Glucose, B = Fructose, C = Albumin
(3)A = Lactose, B = Glucose, C = Alanine
(4)A = Lactose, B = Fructose, C = Alanine

Official answer

Option 1

NTA final key (Jan 2020).

Chapter: Biomolecules
Topic: Carbohydrates
Idea tested: Molisch Test

Same topic in other shifts

All Carbohydrates questions

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.