Which sol is used as an intramuscular injection?

The correct statements with respect to dialysis of colloidal solution are
$I$. Colloidal particles can pass through the membrane.
$II$. Animal bladder can be used as membrane.
$III$. Cellophane is not used as membrane.
$IV$. Ions or small molecules can diffuse through membrane into water.

For a gold sol,the dispersed phase,dispersion medium,and the nature of the colloidal solution (lyophilic or lyophobic) are respectively ......

Give information about Brownian movement.

For arsenious sulphide sol,which one of the following salt solutions will be most effective for coagulation?

Which of the following is an associated colloid?