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Friday, 9 October

JEE Main 2025 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 4 April 2025, Shift 2, Chemistry Q72

Question 72 of 75 in this shift, Chemistry question 22 of 25, Section B.

The molar conductance of an infinitely dilute solution of ammonium chloride was found to be 185 S cm2 mol−1185\ \mathrm{S\,cm^2\,mol^{-1}} and the ionic conductance of hydroxyl and chloride ions are 170 and 70 S cm2 mol−170\ \mathrm{S\,cm^2\,mol^{-1}}, respectively. If molar conductance of 0.02 M solution of ammonium hydroxide is 85.5 S cm2 mol−185.5\ \mathrm{S\,cm^2\,mol^{-1}}, its degree of dissociation is given by x×10−1x\times10^{-1}. The value of xx is __________. (Nearest integer)

Official answer

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.