Question

Define diffusion with suitable examples

Answer 1

diffusion means movement of particles from high concentration area to low concentration area. Ex:carbondioxide is high in our body but low in atmosphere and oxygen is high in atmosphere but low in our body so these two gases interchange each other and go to the place where it is low.
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Answer 2

Movement of particles from higher concentrations to lower concentrations spontaneously called as diffusion

Ex:-smell of food can be sensed all over the place

perfume smell as it diffuses in air and can be sensed by our nose..