JEE Main 2019ChemistryStates of MatterMediumMCQ

JEE Main 2019 — States of Matter Question with Solution

JEE Main 2019 (09 Jan Shift 1)

Question

0.5 moles of gas A and x moles of gas B exert a pressure of 200 Pa in a container of volume 10 m3 at 1000 K . Given, R is the gas constant in JK-1mol-1, x is:

Choose an option

Show full solutionCorrect option: C
Correct answer
C4-R2R

Step-by-step explanation

According to the ideal gas equation:

PV=nRT

200×10=(0.5+x)R×1000

2=0.5R+xR

x=2-0.5RR=4-R2R

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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.