JEE Main 2022 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 27 June 2022, Shift 1, Physics Q50

Question 50 of 90 in this shift, Physics question 20 of 30, Section A.

A mixture of hydrogen and oxygen has volume

2000\ \mathrm{cm^3}

, temperature 300 K, pressure 100 kPa and mass 0.76 g. The ratio of number of moles of hydrogen to number of moles of oxygen in the mixture will be : [Take gas constant

R=8.3\ \mathrm{JK^{-1}mol^{-1}}

]

(1) $\frac{1}{3}$
(2) $\frac{3}{1}$ Official answer
(3) $\frac{1}{16}$
(4) $\frac{16}{1}$

Official answer

Option 2

NTA final key.

Chapter: Kinetic Theory
Topic: Ideal Gas Laws
Idea tested: Ideal Gas Equation

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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.