JEE Main 2021 · ChemistryMultiple choiceSingle correctMediumConceptual

JEE Main 4 August 2021, Shift 2, Chemistry Q49

Question 49 of 90 in this shift, Chemistry question 19 of 30, Section A.

The evidence about the cyclic structure of glucose appears from the fact that

(1)penta-acetate of glucose does not react with hydroxyl amine.Official answer
(2)glucose reacts with $\mathrm{NH_2OH}$ to form oxime.
(3)glucose does not form hexa-acetate.
(4)glucose produces gluconic acid with hydroxyl amine.

Official answer

Option 1

NTA final key.

Chapter: Biomolecules
Topic: Carbohydrates
Idea tested: Chemical Evidence for the Cyclic Structure

Same topic in other shifts

All Carbohydrates questions

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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 108 of the 174 JEE Main shifts held from 2017 to 2026.