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Friday, 9 October

JEE Main 2024 · ChemistryMultiple choiceSingle correctMediumConceptual

JEE Main 9 April 2024, Shift 2, Chemistry Q65

Question 65 of 90 in this shift, Chemistry question 5 of 30, Section A.

Which out of the following is a correct equation to show change in molar conductivity with respect to concentration for a weak electrolyte, if the symbols carry their usual meaning :
  1. (1)Λm−Λm∘+AC12=0\Lambda_m-\Lambda_m^\circ+AC^{\frac{1}{2}}=0
  2. (2)Λm−Λm∘−AC12=0\Lambda_m-\Lambda_m^\circ-AC^{\frac{1}{2}}=0
  3. (3)Λm2C−KaΛm∘2+KaΛmΛm∘=0\Lambda_m^2C-K_a\Lambda_m^{\circ2}+K_a\Lambda_m\Lambda_m^\circ=0Official answer
  4. (4)Λm2C+KaΛm∘2−KaΛmΛm∘=0\Lambda_m^2C+K_a\Lambda_m^{\circ2}-K_a\Lambda_m\Lambda_m^\circ=0

Official answer

Option 3

NTA final key.

Chapter
Electrochemistry
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 42 of the 174 JEE Main shifts held from 2017 to 2026.