Assertion : An ordinary filter paper impregnated with collodion solution stops the flow of colloidal particles.

Reason : Pore size of the filter paper becomes more than the size of colloidal particle.


Colloidal particles can pass through the filter papers as their pores are too large as compared to the size of the colloidal particles. The pores of filter paper are reduced when it is impregnated with the collodion solution due to which the flow of the colloidal particles is stopped. The pore size in this case is less than the colloidal particles due to which they stop.

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