JEE Main 2018ChemistryThermodynamics (C)EasyMCQ

JEE Main 2018 — Thermodynamics (C) Question with Solution

JEE Main 2018 (16 Apr Online)

Question

For which of the following processes, ∆S is negative?

Choose an option

Show full solutionCorrect option: B
Correct answer
BN2g,1atm→N2(g, 5 atm)

Step-by-step explanation

N2 g, 1 atm→ N2 (g, 5 atm)

∆S=nCvlnT2T1+nRlnV2V1

For isothermal process T1= T2and V2V1= P1P2

=0+nRln⁡P1P2=nRln⁡15

∆S<0

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About this question

This is a previous-year question from JEE Main 2018, covering the Thermodynamics (C) 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.