The most effective coagulating agent among the options for $Sb_2S_3$ sol is

Substances whose solutions can easily pass through animal membranes are called $......$.

The migration of dispersion medium under the influence of an electric potential is called

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.

Haemoglobin and gold sol are examples of

Peptization denotes