NEET Physics Ideal Gas Equation MCQ Question
In a vessel containing a mixture of ideal gases, the partial pressure ratio of neon to oxygen is 3:2. If the atomic mass of Ne is 20.2 u and the molecular mass of O2 is 32.0 u, what is the ratio of the number of molecules of neon to that of oxygen?
3:2
2:3
32:20.2
20.2:32
Correct Answer
Detailed Explanation
According to the ideal gas equation, the ratio of partial pressures is equal to the ratio of the number of molecules because V and T are constant for both gases. Thus, the partial pressure ratio of 3:2 gives a molecule ratio of 3:2.
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