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Viscosity of a gas

Viscosity of a gas Correct Answer Increases with increase in temperature

Explanation:

  • As temperature increases, randomness in molecules also increases. This increase in randomness will result in an increase in viscosity as the viscosity of gas depends on the randomness & collision of gas molecules.
  • Phenomenon: As a gas is heated, the movement of gas molecules increases and the probability that one gas molecule will collide with another gas molecule increases.
  • In other words, increasing gas temperature causes the gas molecules to collide more often. This increases the gas viscosity because the transfer of momentum between stationary and moving molecules is what causes gas viscosity.
  • Hence we can say that viscosity increases with the increase in temperature.

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