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Friday, 9 October

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JEE Main 2021 · ChemistryMultiple choiceSingle correctMediumRecall

JEE Main 18 March 2021, Shift 1, Chemistry Q50

Question 50 of 90 in this shift, Chemistry question 20 of 30, Section A.

Reagent, 1-naphthylamine and sulphanilic acid in acetic acid is used for the detection of :

(1) $\mathrm{NO_2^-}$ Official answer
(2) $\mathrm{NO_3^-}$
(3)NO
(4) $\mathrm{N_2O}$

Official answer

Option 1

NTA final key.

Chapter: Organic Chemistry: Some Basic Principles and Techniques
Topic: No close match in our taxonomy
Idea tested: No close match in our taxonomy

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.