JEE Main 2022 · ChemistryMultiple choiceSingle correctMediumMulti-step

JEE Main 26 June 2022, Shift 1, Chemistry Q62

Question 62 of 90 in this shift, Chemistry question 2 of 30, Section A.

An evacuated glass vessel weighs 40.0 g when empty, 135.0 g when filled with a liquid of density 0.95 g mL

^{-1}

and 40.5 g when filled with an ideal gas at 0.82 atm at 250 K. The molar mass of the gas in g mol

^{-1}

is : (Given : R=0.082 L atm K

^{-1}

mol

^{-1}

)

(1)35
(2)50
(3)75
(4)125Official answer

Official answer

Option 4

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.