The stability of lyophilic colloidal sol is due to

Identify the correct statements from the following:
$(i)$ $A$ closed vessel containing $90 \%$ $CO_2$ and $10 \%$ $O_2$ is an aerosol.
$(ii)$ Milk is an emulsion.
$(iii)$ Smoke is an aerosol.
$(iv)$ Peptisation is a method of purification of colloidal solution.
$(v)$ Ultrafiltration is a method of purification of colloidal solution.

Gold sol is not:

The difference between a lyophilic and lyophobic colloid is in their

The most effective coagulating agent for antimony sulphide sol is

For the coagulation of a positively charged hydrated ferric oxide sol,the flocculating power of the ions is in the order: