Differences Between Osmosis and Diffusion
| Osmosis | Diffusion |
| In osmosis movement of molecules takes place through a semi-permeable membrane. | In diffusion there is no role of semi-permeable membrane. |
| It involves movement of only solvent molecules from one side to the other. | It involves passage of solvent as well as solute molecules from one region to the other. |
| Osmosis is limited to solutions only. | Diffusion can take place in liquids, gases and solutions. |
| Osmosis can be stopped or reversed by applying additional pressure on the solution side. | Diffusion can neither be stopped nor reversed |
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