In which of the following is the Tyndall effect more pronounced?

Which of the following ions will have the minimum coagulating value for the sol obtained by adding $FeCl_3$ solution to a slight excess of $NaOH$?

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

The correct statement$(s)$ related to colloids is(are):
$(A)$ The process of precipitating colloidal sol by an electrolyte is called peptization.
$(B)$ Colloidal solution freezes at a higher temperature than the true solution at the same concentration.
$(C)$ Surfactants form micelles above the critical micelle concentration $(CMC)$. $CMC$ depends on temperature.
$(D)$ Micelles are macromolecular colloids.

Identify the correct option regarding surface phenomenon.

Match the following types of colloidal systems given in List-$I$ with their respective names given in List-$II$.

List-$I$	List-$II$
$(A)$ Solid dispersed in liquid	$(I)$ Emulsion
$(B)$ Liquid dispersed in liquid	$(II)$ Foam
$(C)$ Gas dispersed in liquid	$(III)$ Gel
$(D)$ Liquid dispersed in solid	$(IV)$ Sol
-	$(V)$ Aerosol