Q16 / 118 · NTA Abhyas (NEET) 2020 · Chemistry · States of Matter

Which is correct for a diatomic molecule, according to the kinetic theory of gases

  • A
    The root mean square velocity is inversely proportional to the temperature
  • B
    The pressure exerted by the gas is proportional to the root mean square velocity of the molecules
  • C
    The mean translational kinetic energy of the molecules is proportional to the absolute temperature
  • Correct answer
    D
    The pressure exerted by the gas is proportional to the mean velocity of the molecules

Solution

All molecules of an ideal gas show random motion. They collide with each other and walls of container during which they lose or gain energy so they may not have same kinetic energy always.

Hence, the correct answer is option: 'D'.

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