How is molecular motion related with temperature?
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Molecular motion is directly proportional to temperature. When temperature increases molecular motion increases and when temperature decreases molecular motion decreases.
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What do you understand by gas?
What is diffusion ? Give an example to illustrate it.
Define absolute zero and absolute scale of temperature.
(a) Define S.T.P.
(b) Why is it necessary to compare gases at S.T.P.?