Coefficient of viscosity of a gas: (A) increases with increase of temperature (B) decreases with increase of temperature (C) remains constant with increase of temperature (D) may increase or decrease with increase of temperature

Increases with increase of temperature

The molecule of gas carry more momentum and collide more often with increase in temperature. That means more viscosity. Hence, the coefficient of viscosity of gases will increase with the increase in temperature.

So, the correct option is (A)

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