JEE Main 2022 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 29 July 2022, Shift 2, Chemistry Q81

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

‘x’ g of molecular oxygen (

\mathrm{O_2}

) is mixed with 200 g of neon (Ne). The total pressure of the non-reactive mixture of

\mathrm{O_2}

and Ne in the cylinder is 25 bar. The partial pressure of Ne is 20 bar at the same temperature and volume. The value of ‘x’ is ___. [Given: Molar mass of

\mathrm{O_2}

= 32 g

\mathrm{mol^{-1}}

. Molar mass of Ne = 20 g

\mathrm{mol^{-1}}

]

Official answer

NTA final key.

Chapter: States of Matter
Topic: Ideal Gas Laws
Idea tested: Dalton's Law

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Asked 7× 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.