Difusion in solid liquid and gas

1.	Difusion in solid liquid and gas
Answer» Diffusion in gases\t It is very fast (becoz the particles in gases move very quickly in all directions )\tThe rate of diffusion of a gas, depends on its density. Light gas diffuse faster than heavy gases.\tE.g. when we light an incense stick (agarbatti) in a corner of our room,it\'s fragrance spreads in the whole room very quickly to diffusion of its smoke into airDiffusion in liquid\xa0\tIt is slower than gas ( becoz particles in liquid move slower than gases )\tE.g. the spreading of purple colour of potassium permanganate into water, on its own, is due to the diffusion of potassium permanganate particles into water\xa0Diffusion in solids\xa0\tIt can also takes place in solids . In this diffusion is very very slow process .\tE.g. if we write something on blackboard and leave uncleaned for considerable period of time, we will find that it becomes quite difficult to clean afterwards . This is due to the fact that some of particles of chalk have diffused into surface of blackboard .\xa0

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