$Fe(OH)_3$ sol is prepared by the hydrolysis of $FeCl_3$ in hot water. If the sol is electrolysed using inert electrodes,the only correct statement is -

At $CMC$,the surface active molecules .........

$A$ sample of red ink (a colloidal solution) is prepared by mixing eosin dye,egg white,$HCHO$ and water. The component which ensures stability of the ink sample is :-

The gold numbers of $A, B, C$ and $D$ are $0.04, 0.002, 10$ and $25$ respectively. What is the order of their protective power?

According to Graham,colloids are those substances which are

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.