Sulphur sol contains

$Fe(OH)_3$ 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 -

Gold number is minimum in the case of

The coagulation values in millimoles per litre of the electrolytes used for the coagulation of $As_2S_3$ are given below:
$I$. $(NaCl) = 52,$
$II$. $(BaCl_2) = 0.69,$
$III$. $(MgSO_4) = 0.22$
The correct order of their coagulating power is:

In the reaction $SO_{2(g)} + 2H_2S_{(g)} \rightarrow 3S_{(sol)} + 2H_2O_{(l)}$,which method is used to obtain the sulfur sol?

Identify the property of colloidal solutions where colloidal particles move freely towards respective electrodes under an applied electrical potential.