Learn

Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 26 June 2022, Shift 1, Chemistry Q80

Question 80 of 90 in this shift, Chemistry question 20 of 30, Section A.

Which statement is not true with respect to nitrate ion test ?
  1. (1)A dark brown ring is formed at the junction of two solutions.
  2. (2)Ring is formed due to nitroferrous sulphate complex.Official answer
  3. (3)The brown complex is [Fe(H2O)5 (NO)]SO4[\mathrm{Fe(H_2O)_5\ (NO)}]\mathrm{SO_4}.
  4. (4)Heating the nitrate salt with conc. H2SO4\mathrm{H_2SO_4}, light brown fumes are evolved.

Official answer

Option 2

NTA final key.

Chapter
Organic Chemistry: Some Basic Principles and Techniques
Topic
Anion Analysis
Idea tested
Nitrate Brown Ring Test

Same topic in other shifts

All Anion Analysis questions
  1. 5 Apr 2026, Shift 2 · Q70A paper dipped in a dil. H2SO4\mathrm{H_2SO_4} solution of 'X' upon treatment with SO2\mathrm{SO_2} gas turns into green. The compound 'X' is :EasySingle correct
  2. 2 Apr 2025, Shift 2 · Q62Formation of Na4[Fe(CN)5NOS]\mathrm{Na_4[Fe(CN)_5NOS]}, a purple coloured complex formed by addition of sodium nitroprusside in sodium carbonate…EasySingle correct
  3. 6 Apr 2024, Shift 2 · Q72During the detection of acidic radical present in a salt, a student gets a pale yellow precipitate soluble with difficulty in…EasySingle correct
  4. 8 Apr 2024, Shift 1 · Q73Match List I with List II LIST I (Compound): A. Fe4[Fe(CN)6]3⋅xH2O\mathrm{Fe_4[Fe(CN)_6]_3\cdot xH_2O}; B. [Fe(CN)5NOS]4−[\mathrm{Fe(CN)_5NOS}]^{4-}; C.…MediumMatch the list
  5. 29 Jan 2024, Shift 1 · Q79In chromyl chloride test for confirmation of Cl−\mathrm{Cl^-} ion, a yellow solution is obtained. Acidification of the solution and…MediumSingle correct
  6. 30 Jan 2024, Shift 1 · Q79Given below are two statements : Statement (I) : The gas liberated on warming a salt with dil H2SO4\mathrm{H_2SO_4}, turns a piece of paper…EasyTwo statements

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.