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Saturday, 31 October

JEE Main 2023 · ChemistryMultiple choiceSingle correctMediumConceptual

JEE Main 10 April 2023, Shift 1, Chemistry Q71

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

Using column chromatography, mixture of two compounds ‘A’ and ‘B’ was separated. ‘A’ eluted first, this indicates ‘B’ has
  1. (1)high Rf\mathrm{R_f}, weaker adsorption
  2. (2)high Rf\mathrm{R_f}, stronger adsorption
  3. (3)low Rf\mathrm{R_f}, weaker adsorption
  4. (4)low Rf\mathrm{R_f}, stronger adsorptionOfficial answer

Official answer

Option 4

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