0.5 mole of each of H2 , SO2 and CH4 are kept in a container. A hole was made in the container. After 3 hours, me order of partial pressures in the container will be

According to Graham's law of diffusion, rate of diffusion ∝1Mol. masssince equal moles of all gases were taken in the container, the rate of diffusion will be in the order : H2>CH4>SO2∴ the order of partial pressure of the gases remaining in the container will be :  pSO2>pCH4>pH2