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WHAT IS DIFUTION
Diffusion is the property by the virtue of which the gas molecules tend to flow from a region of higher concentration to that of the lower concentration through a porous membrane .Whenever two or more gases are brought into contact directly or through a porous membrane ,they mix with each other to form a homogenous mixture .
  When a bottle of perfume is opened in a room ,it smell spreads in the entire room.
Perfume is a liquid which gives vapor easily ,when the bottle is opened,the vapour of perfume mix with the air and the smell spreads in the entire room .This is because of the diffusion property


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