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In which condition, a real gas behaves as an ideal gas?

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Important Questions on Kinetic Theory of Gases

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Alpha Question Bank for Medical: Physics>Chapter 18 - Kinetic Theory of Gases>Exercise-1>Q 7
A real gas behaves like an ideal gas, if its
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Alpha Question Bank for Medical: Physics>Chapter 18 - Kinetic Theory of Gases>Exercise-1>Q 8
Two non-reactive monoatomic ideal gases have their atomic masses in the ratio 2:3. The ratio of their partial pressure, when enclosed in a vessel kept at a constant temperature is 4:3. The ratio of their densities is
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Alpha Question Bank for Medical: Physics>Chapter 18 - Kinetic Theory of Gases>Exercise-1>Q 9
The degrees of freedom of a stationary rigid body about its axis will be
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Alpha Question Bank for Medical: Physics>Chapter 18 - Kinetic Theory of Gases>Exercise-1>Q 10
The temperature of an ideal gas at atmospheric pressure is 300 K and volume 1 m3. If temperature and volume become double, then the pressure will be
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Alpha Question Bank for Medical: Physics>Chapter 18 - Kinetic Theory of Gases>Exercise-1>Q 11
At what temperature volume of an ideal gas at 0°C becomes triple?
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Alpha Question Bank for Medical: Physics>Chapter 18 - Kinetic Theory of Gases>Exercise-1>Q 12

Two balloons are filled; one with pure He gas and the other with air, respectively. If the pressure and temperature of these balloons are the same, then the number of molecules per unit volume is

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Alpha Question Bank for Medical: Physics>Chapter 18 - Kinetic Theory of Gases>Exercise-1>Q 13
A diatomic molecule has
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Alpha Question Bank for Medical: Physics>Chapter 18 - Kinetic Theory of Gases>Exercise-1>Q 14
The equation of state for 5 g of oxygen, at a pressure P and temperature T, when occupying a volume V, will be