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Which of the following is not a correct ...

Which of the following is not a correct postulate of the kinetic molecular theory of gases ?

A

Molecules of gases remain in continuous motion.

B

while moving, they collide with each other and with the walls of the container.

C

Collisions of gas molecules are inelastic.

D

Speeds and energies of the molecules of the gas at any instant are not the same.

Text Solution

Verified by Experts

The correct Answer is:
C
Collisions of gas molecules are perfectly elastic, i.e., the total energy of molecules before and after the collision remains the same.
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Knowledge Check

  • Which of the following is NOT a postulate of the kinetic molecular theory of gases?

    A
    The gas molecules possess a volume that is negligibly small compared to the container
    B
    The pressure and volume of a gas are inversely related
    C
    Gases consist of discrete particles that are in constant chaotic motion
    D
    The average kinetic energy of the molecules is directly proportional to the absoute temperature

  • Which is not one of the postulates of the kinetic molecular theory?

    A
    At a constant temp. all the particle have the same speed.
    B
    There are no force of attraction between molecules.
    C
    Gas particles move in a straight line between collisions.
    D
    The molecules are in a state of constant random motion.

  • Which of the following is not the postulate of the kinetic theory of gases?

    A
    Gas molecules are in a permanent state of random motion.
    B
    Pressure of gas is due to molecular impacts on the walls
    C
    The molecules are perfectly elastic
    D
    The molecular collisions are elastic

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    Kinetic theory of gases is a generalization offered by Maxwell. Boltzmann, Clausius, etc. to explain the behaviour of ideal gases. This theory assumes that ideal gas molecules neither attract nor repel each other. Average kinetic energy of gas molecules is directly proportional to the absolute temperature. A gas equation called kinetic gas equation was derived on the basis of kinetic theory PV = (1)/(3) mv^(2) Which of the following do not pertain to the postulates of kinetic theory of gaes ?

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