JEE Main 2019ChemistryStates of MatterHardMCQ

JEE Main 2019 — States of Matter Question with Solution

JEE Main 2019 (10 Apr Shift 2)

Question

Points I, II and III in the following plot respectively correspond to (Vmp: most probable velocity)

Choose an option

Show full solutionCorrect option: C
Correct answer
CVmp of N2300 K; Vmp of O2400 K; Vmp of H2300 K;

Step-by-step explanation

Vmp=2RTM ∝TM

For N2 at 300 K,  Vmp∝TM ∝30028=3.2

For O2 at 300 K,Vmp∝TM ∝40032=3.53

For H2 at 300 K,   Vmp∝TM ∝3002=12.24

Vmp of N2<Ump of O2<Ump of H2

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About this question

This is a previous-year question from JEE Main 2019, covering the States of Matter 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.