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  1. When a bottle of scent is kept open in a corner of a room its odour is felt in all parts of the room. This is due to the phenomenon of :

  2. A.

     Evaporation

    B.

     Vaporisation

    C.

     Diffusion

    D.

     Sublimation

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    Answer : Option C

    Explanation :

    When a bottle of perfume is opened in a corner of a room, the scent soon spreads all over the room. This physical procedure is called diffusion, due to which the liquid or gaseous molecules travels from the area of higher density to that of the lower density of that substance.


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