Answers

2014-07-09T14:00:57+05:30
Absorption is the sucking in of substances, like water into sponge. 

Adsorption is the accumulation of substances on the surface of another, without going inside.
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2014-07-09T17:53:23+05:30

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ABSORPTION:
i) The concentration of solute is uniform distributed all over the surface.
  Eg., cotton dipped in ink is blue throughout.            
It is a bulk phenomenon.

ADSORPTION:
i) The concentration of substance is more on surface and less in the bulk.
Eg., chalk dipped in ink is blue on the surface and white in bulk.
It is a surface phenomenon.

                                                   
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