JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 24 June 2022, Shift 2, Chemistry Q80

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

In the flame test of a mixture of salts, a green flame with blue centre was observed. Which one of the following cations may be present?

(1)Cu $^{2+}$ Official answer
(2)Sr $^{2+}$
(3)Ba $^{2+}$
(4)Ca $^{2+}$

Official answer

Option 1

NTA final key.

Chapter: Practical Chemistry (Qualitative Analysis)
Topic: Cation Analysis
Idea tested: Cation Flame Colors

Same idea in other shifts

Asked 3× in all

2 Apr 2026, Shift 1 · Q70A salt with few drops of conc. HCl gives apple green colour in flame test. The group precipitate of the salt is dissolved in acetic acid…MediumSingle correct
8 Apr 2024, Shift 1 · Q72Match List I with List II LIST I (Name of the test): A. Borax bead test; B. Charcoal cavity test; C. Cobalt nitrate test; D. Flame test…MediumMatch the list

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.