JEE Main 2023ChemistryElectrochemistryMediumNumerical

JEE Main 2023 — Electrochemistry Question with Solution

JEE Main 2023 (31 Jan Shift 2)

Question

The resistivity of a 0.8M solution of an electrolyte is 5×10-3Ωcm. Its molar conductivity is 104Ω-1 cm2 mol-1. (Nearest integer)

Enter your answer

Show full solutionCorrect answer: 25
Correct answer
25

Step-by-step explanation

Given,
Resistivity (ρ)=5×10-3Ωcm

Molarity (M)=0.8M

Thus, Molar conductivity of electrolyte λM=1ρ×1000M

=15×10-3×10000.8

=0.25×106

=25×104 cm2 mol-1.

Practice this on the real CBT interface

Solve this JEE Main question (and the rest of the Electrochemistry chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.

Solve interactively →

About this question

This is a previous-year question from JEE Main 2023, covering the Electrochemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.