JEE Main 2021ChemistryStates of MatterEasyMCQ

JEE Main 2021 — States of Matter Question with Solution

JEE Main 2021 (27 Aug Shift 1)

Question

The unit of the van der Waals gas equation parameter 'a' in P+an2V2(V-nb)=nRT is:

Choose an option

Show full solutionCorrect option: C
Correct answer
Catm dm6 mol-2

Step-by-step explanation

Pressure correction ΔP=an2V2

a=ΔP×V2n2atm(Lit)2( mole )2=atmdm32( mole )2

a=atm·dm6·mol-2

Practice this on the real CBT interface

Solve this JEE Main question (and the rest of the States of Matter 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 2021, 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.