JEE Main 2019ChemistryElectrochemistryConductance And ElectrolysiseasyMCQ

JEE Main 2019Electrochemistry Question with Solution

From: JEE Main 2019 (Online) 10th April Morning Slot

Question

Consider the statements S1 and S2

S1 : Conductivity always increases with decrease in the concentration of electrolyte.

S2 : Molar conductivity always increases with decrease in the concentration of electrolyte.

The correct option among the following is :

Choose an option

Show full solutionCorrect option: D
Correct answer
DS1 is wrong and S2 is correct

Step-by-step explanation

We know conductivity (k) =

V = volume

When concentration decreases volume increases and when volume increases then conductivity (k) decreases.

So, we can say S1 is incorrect.

We know that,



where

m = molar conductivity
k = conductivity
c = concentration

So, when concentration decreases molar conductivity increases.

So, we can say S2 is correct.

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About this question

This is a previous-year question from JEE Main 2019, 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.