MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryGaseous statePrevious Year Questions
The ratio of rates of diffusion of helium and methane under same conditions of temperature and pressure will be (CG PMT, Haryana PMT 2009)
A.4 : 1
B.2 : 1✓ Correct
C.1 : 1
D.1 : 2
Explanation
According to Grahm’s law of diffusion, rate of diffusion 1/ Molecular mass 4 4 16 4 2 :1 4 1 CH He CH He M r r M
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