JEE Main 2021ChemistryStates of MatterMediumNumerical

JEE Main 2021 — States of Matter Question with Solution

JEE Main 2021 (25 Jul Shift 1)

Question

A home owner uses 4.00×103 m3 of methane CH4 gas, (assume CH4 is an ideal gas) in a year to heat his home. Under the pressure of 1.0 atm and 300 K, mass of gas used is x×105 g. The value of x is ______. (Nearest integer)

(Given R=0.083 L atm K-1 mol-1)

Enter your answer

Show full solutionCorrect answer: 26
Correct answer
26

Step-by-step explanation

nCH4=PVRT

=1×4×103×10000.083×300

Weight of CH4

=40×16×1050.083×300gm

=25.7×105 gm

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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.