NEET Physics Ideal Gas Equation MCQ Question
Consider a diagram depicting a container filled with a mixture of two ideal gases, A and B, at constant temperature and volume. If the partial pressures of gases A and B are represented by P_A and P_B respectively, and it is given that P_A = 2P_B, which of the following correctly describes the ratio of the number of molecules of gas A to gas B?
2:1
1:1
1:2
3:1
Correct Answer
Detailed Explanation
According to Dalton’s law of partial pressures, the partial pressure of each gas in a mixture is proportional to its number of molecules. Given P_A = 2P_B, the number of molecules of gas A is twice that of gas B, hence the ratio is 2:1.
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