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Which statement is true according to the kinetic theory?
a.Only gases show random motion of particles.
b.Only gases and liquids show random motion of particles.
c.Solids have a fixed shape, so they do not show random motion of particles.
d.All states of matter show random motion of particles.

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anubhav1
c.Solids have a fixed shape, so they do not show random motion of particles.

Answer:

The correct answer is option (a).

Explanation:

The very first postulate of kinetic gas theory discuss that the gases have a random motion of particles. The motion of the gas particles continues in a straight lines until or unless they get collide with another particles or with the walls of the containers.

Whereas as other postulates were:

  • Gas particles are of point masses with no volume.
  • No molecular forces are at work.
  • Gas pressure is due to collision of particles with walls of container.
  • Kinetic energy of the gas particles is measured in Kelvin temperature.
  • Lighter particles moves with higher speed than heavier gas particles.

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