JEE Main 2020ChemistryBiomoleculesCarbohydrateseasyMCQ

JEE Main 2020 — Biomolecules Question with Solution

From: JEE Main 2020 (Online) 2nd September Evening Slot

Question

The correct observation in the following reactions is : JEE Main 2020 (Online) 2nd September Evening Slot Chemistry - Biomolecules Question 127 English

This question includes a diagram. The text above accompanies the figure.

Choose an option

Show full solutionCorrect option: C
Correct answer
CFormation of red colour

Step-by-step explanation

Seliwanoff's test is used to distinguish between aldose and ketone sugars; when added to a solution containing ketose, red colour is formed rapidly.
JEE Main 2020 (Online) 2nd September Evening Slot Chemistry - Biomolecules Question 127 English Explanation

Practice this on the real CBT interface

Solve this JEE Main question (and the rest of the Biomolecules chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.

Solve interactively →

About this question

This is a previous-year question from JEE Main 2020, covering the Biomolecules chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.