JEE Main 2022 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 24 June 2022, Shift 2, Chemistry Q81

Question 81 of 90 in this shift, Chemistry question 21 of 30, Section B.

At 300 K, a sample of 3.0 g of gas A occupies the same volume as 0.2 g of hydrogen at 200 K at the same pressure. The molar mass of gas A is ________ g mol

^{-1}

. (nearest integer) Assume that the behaviour of gases is ideal. (Given: The molar mass of hydrogen (H

_2

) gas is 2.0 g mol

^{-1}

Official answer

NTA final key.

Chapter: States of Matter
Topic: Ideal Gas Laws
Idea tested: Ideal Gas Equation

Same idea in other shifts

Asked 10× in all

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.