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Saturday, 31 October

JEE Main 2020 · ChemistryMultiple choiceSingle correctEasyConceptual

JEE Main 8 January 2020, Shift 2, Chemistry Q30

Question 30 of 75 in this shift, Chemistry question 5 of 25, Section A.

Arrange the following bonds according to their average bond energies in descending order : C – Cl, C – Br, C – F, C – I
  1. (1)C – Cl > C – Br > C – I > C – F
  2. (2)C – F > C – Cl > C – Br > C – IOfficial answer
  3. (3)C – I > C – Br > C – Cl > C – F
  4. (4)C – Br > C – I > C – Cl > C – F

Official answer

Option 2

NTA final key (Jan 2020).

Chapter
Chemical Bonding and Molecular Structure
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.