What are the three examples of diffusion?

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(i) Place a copper sulphate crystal in a beaker containing water. The crystal gradually dissolves and one can see particles of copper sulphate migrating in all directions in water.

(ii) Fix a porous partition at the base of a ‘V’ tube. Fill one arm with water and the other with sugar solution. Slowly sugar solution migrates to the arm containing water. After sometime the concentration of solution is both the arms will be same.

(iii) Burn an agarbathi or open a bottle of ammonia in one corner of the room. After sometime it could be smelt even in the furthers corner of the room.

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