JEE Main 2021ChemistryElectrochemistryEasyMCQ

JEE Main 2021 — Electrochemistry Question with Solution

JEE Main 2021 (31 Aug Shift 2)

Question

Match List - I with List - II :

  List - I
(Parameter)		   List - II (Unit)
(a) Cell constant (i) S cm2 mol-1
(b) Molar conductivity (ii) Dimensionless
(c) Conductivity (iii) m-1
(d) Degree of dissociation of electrolyte (iv) Ω-1 m-1

Choose an option

Show full solutionCorrect option: A
Correct answer
A(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)

Step-by-step explanation

Cell constant =ℓA=m-1 

Conductivity k=1ρ=ℓRA=Ω-1 m-1 

Molar Conductivity =λm=k×1000 Molarity =S cm2 mol-1

Degree of dissociation = Number of mole dissociated out of one mole, hence, it is dimensionless.

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About this question

This is a previous-year question from JEE Main 2021, 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.