JEE Main 2019ChemistryStates of MatterMediumMCQ

JEE Main 2019 — States of Matter Question with Solution

JEE Main 2019 (12 Jan Shift 2)

Question

An open vessel at 27oC is heated until two fifth of the air (assumed as an ideal gas) in it has escaped from the vessel. Assuming that the volume of the vessel remains constant, the temperature to which the vessel has heated is:

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Show full solutionCorrect option: D
Correct answer
D500 K

Step-by-step explanation

n1T1=n2T2

⇒n×300=n-2n5T2

⇒300=35T2

⇒T2=500 K

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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.