The process of separating colloidal particles from those of molecular dimensions by electric current is known as:

Which of the following is an incorrect statement?

When a substance comes in colloidal state,the surface area of the particles:

Which of the following is an example of multimolecular colloids?

The flocculation value of $HCl$ for arsenic sulphide sol is $30 \; mmol \; L^{-1}$. If $H_{2}SO_{4}$ is used for the flocculation of arsenic sulphide,the amount,in grams,of $H_{2}SO_{4}$ in $250 \; mL$ required for the above purpose is (molecular mass of $H_{2}SO_{4} = 98 \; g/mol$)

Substances whose solutions can readily diffuse through parchment membranes are