WAEC Physics 2012 Objective — Question 20
Question 20 of 50 from the West African Examinations Council (WAEC) Physics 2012 Objective paper, with the correct answer and a full explanation.
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Which of the following assumptions is not valid for an ideal gas?
- A. A. Molecules of a particular gas are identical
- B. B. Molecules move freely throughout the volume of the container
- C. C. Force of attraction between molecules is negligible
- D. D. Molecules move at constant speed between collisionsCorrect
Explanation
For an ideal gas, molecules move at random with varying speeds between collisions, not at a constant speed.
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