JEE Main 2019ChemistryThermodynamics (C)EasyMCQ

JEE Main 2019 — Thermodynamics (C) Question with Solution

JEE Main 2019 (08 Apr Shift 1)

Question

Which one of the following equations does not correctly represent the first law of thermodynamics for the given processes involving an ideal gas? (Assume non- expansion work is zero)

Choose an option

Show full solutionCorrect option: D
Correct answer
DAdiabatic process : ΔU=-w

Step-by-step explanation

For cyclic process: ΔU=0⇒q=-w
For isothermal process: ΔU=0⇒q=-w
For adiabatic process: q=0⇒ΔU=w
For isochoric process: w=0⇒ΔU=q

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About this question

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