JEE Main 2022 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 30 July 2022, Shift 2, Physics Q8

Question 8 of 90 in this shift, Physics question 8 of 30, Section A.

If the r.m.s speed of oxygen at room temperature is

\sqrt{56}\ \mathrm{m/s}

. The r.m.s speed of nitrogen at the same temperature is ________.

(1) $8\sqrt{2}\ \mathrm{m/s}$
(2) $8\ \mathrm{m/s}$ Official answer
(3) $16\ \mathrm{m/s}$
(4) $7\ \mathrm{m/s}$

Official answer

Option 2

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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27 Jul 2022, Shift 1 · Q39Same gas is filled in two vessels of the same volume at the same temperature. If the ratio of the number of molecules is 1:4, then A. The…EasyOther
28 Jul 2022, Shift 1 · Q38Given below are two statements : Statement I : The average momentum of a molecule in a sample of an ideal gas depends on temperature.…MediumTwo statements
28 Jul 2022, Shift 2 · Q8A vessel contains 14 g of nitrogen gas at a temperature of $27^\circ$ C. The amount of heat to be transferred to the gas to double the…MediumSingle correct
29 Jul 2022, Shift 2 · Q49The root mean square speed of smoke particles of mass $5\times10^{-17}$ kg in their Brownian motion in air at NTP is approximately. [Given…EasySingle correct

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.