JEE Main 2017ChemistryStates of MatterEasyMCQ

JEE Main 2017 — States of Matter Question with Solution

JEE Main 2017 (09 Apr Online)

Question

At 300 K, the density of a certain gaseous molecule at 2 bar is double to that of dinitrogen N2 at 4 bar. The molar mass of the gaseous molecule is

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Show full solutionCorrect option: B
Correct answer
B112 g mol-1

Step-by-step explanation

d=PMwtRTd1P1M1=d2P2M2

2d22×Mgas=d24×MN2

Mgas=4×MN2

=112 g mol−1.

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About this question

This is a previous-year question from JEE Main 2017, 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.