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JEE Main 202330 JanuaryEvening Shift
Exam
JEE Main
Year
2023
Date
30 January
Shift
Evening Shift
Subject
Physics
Chapter
Kinetic Theory of Gases

JEE Main 2023 · 30 January · Evening Shift · Physics · Kinetic Theory of Gases

A flask contains hydrogen and oxygen in the ratio of 2: 1 by mass...

A flask contains hydrogen and oxygen in the ratio of 2:12: 1 by mass at temperature 27°C27 ° C. The ratio of average kinetic energy per molecule of hydrogen and oxygen respectively is :

Options

  1. A2:12: 1
  2. B1:11: 1
  3. C1:41: 4
  4. D4:14: 1

Correct answer

B. 1:11: 1

Step-by-step solution

Average Kinetic Energy per molecule KEavg=32kBTK{E}_{avg} = \dfrac{3}{2}{k}_{B}T. Therefore, we can conclude that the average kinetic energy of the molecules is directly proportional to the temperature of the gas and is independent of pressure, volume or the nature of the gas.

Hence, required ratio =1:1= 1: 1

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