Statement 1: An ordinary filter paper impregnated with collodion solution stops the flow of colloidal particles.Statement 2: Pore size of the filter paper becomes more than the size of colloidal particle.

Statement-1 is correct, Statement-2 is incorrect.An ordinary filter paper impregnated with collodion solution stops the flow of colloidal particles because pore size of the filter paper becomes smaller than the size of colloidal particles.