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Saturday, 31 October

JEE Main 2021 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 4 August 2021, Shift 2, Chemistry Q39

Question 39 of 90 in this shift, Chemistry question 9 of 30, Section A.

The set in which both ligands generally behave in a bidentate chelating mode is
  1. (1)CO, SCN−\mathrm{SCN^-}
  2. (2)ethylenediamine, oxalateOfficial answer
  3. (3)CH3NH2\mathrm{CH_3NH_2}, oxalate
  4. (4)NCS−\mathrm{NCS^-}, ethylenediamine

Official answer

Option 2

NTA final key.

Chapter
Coordination Compounds
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.