Multiple choice

All the molecules of a gas are in constant motion. Which of the following statements regarding the nature of this motion is incorrect?

  1. As the gas molecules are elastic in nature there is no loss of energy when the molecules collide. But some energy is transferred during the time of collision.

  2. All the molecules of a gas are in constant motion.

  3. There is a large distance between the gaseous molecules.

  4. The kinetic energy of all the gaseous molecules is independent of the absolute temperature.
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D Correct answer
Explanation

The average kinetic energy of all the gaseous molecules is directly proportional to the absolute temperature. The increase in temperature increases the kinetic energy of the molecules and hence they move at greater speed.

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