Learn

Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 28 June 2022, Shift 1, Chemistry Q71

Question 71 of 90 in this shift, Chemistry question 11 of 30, Section A.

Which one of the following techniques is not used to spot components of a mixture separated on thin layer chromatographic plate ?
  1. (1)I2\mathrm{I_2} (Solid)
  2. (2)U.V. Light
  3. (3)Visualisation agent as a component of mobile phaseOfficial answer
  4. (4)Spraying of an appropriate reagent

Official answer

Option 3

NTA final key.

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