1.

Assertion (A) : An ordinary filter paper impregnated with collodian solution stops the flow of colloidal particles. Reason (R) : Pore size of the filter paper becomes more than the size of colloidal particles.

Answer»

Assertion and reason are correct and reason is correct explanation of assertion. 
Assertion and reason both are correct but reason does not EXPLAIN assertion.
Assertion is correct but reason is incorrect.
Both assertion and reason are incorrect. 

SOLUTION :Assertion is correct but reason is incorrect.
Pore size of FILTER paper decreases. THUS, colloidal particles do not flow through it.


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