JEE Main 2021 · PhysicsMultiple choiceSingle correctEasyConceptual

JEE Main 26 August 2021, Shift 1, Physics Q2

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

The rms speeds of the molecules of Hydrogen, Oxygen and Carbondioxide at the same temperature are

V_H

V_O

and

V_C

respectively then :

(1) $V_H=V_O=V_C$
(2) $V_H=V_O>V_C$
(3) $V_H>V_O>V_C$ Official answer
(4) $V_C>V_O>V_H$

Official answer

Option 3

NTA final key.

Chapter: Kinetic Theory
Topic: Kinetic Theory of Gases
Idea tested: Molecular Speed Types

Same idea in other shifts

Asked 12× 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.