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IGCSE O Level Physics Practice Test 119

# Pressure in Gases Quiz PDF: Questions and Answers - 119

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## Pressure in Gases Questions and Answers : Quiz 119

MCQ 591: In gases, diffusion occurs because

1. Molecules of the gases move in random motion
2. Molecules of the gases attract each other
3. Molecules of the gases that are present in a higher concentration exert a higher pressure
4. Molecules of the gases repel each other

MCQ 592: Surface irregularities between two surfaces result in

1. resistance
2. repulsion
3. Friction
4. Attraction

MCQ 593: Speed is defined as

1. The change of distance with respect to time
2. The rate of change of distance
3. Distance moved per unit time
4. All of the above

MCQ 594: If we feel no cold or hot, we call it

1. temperature constancy
2. thermal constancy
3. thermal equilibrium
4. temperature equilibrium

MCQ 595: SI unit of specific heat capacity is

1. joule
2. joule ⁄ kilogram
3. joule ⁄ (kilogram × kelvin)
4. joule ⁄ kelvin

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