Depending upon whether the dispersed phase and the dispersion medium are solids, liquids or gases _______ types of colloidal systems are possible.

Options

A. three
B. six
C. eight
D. nine

Answer

C

Explanation

Solid dispersed phase can be mixed solid liquid or ges disperision medium i.e. two condinations are possible
However gas dispersed phased can be mixed with solid or liquid dispersion medium i.e. two are possible
a gas mixture with another gas always forms a homogeneous mixture and hence is not a colloidal system.