Question

In which of these the dispersing medium is liquid?

A. face cream
B. fog
C. cheese
D. sponge

Answer 1

Answer:

A. face cream the dispersing medium is liquid:

Face Cream- Dispersed Phase: Liquid. Dispersed Medium: Liquid. Butter- Dispersed Phase: Liquid.

B. Fog the dispersing medium is liquid:

The dispersed phase and dispersion medium of fog respectively are liquid and gas. It is an example of liquid aerosol.

C. Cheese the dispersing medium is liquid:

The dispersed phase is liquid and the dispersion medium is gel or solid emulsion in cheese.

D. Spong, the dispersing medium is liquid:

A Sponge is the colloidal solution of a gas dispersed in a liquid.

Answer 2

• A colloid is a heterogeneous system in which one substance is dispersed in another substance called dispersion medium.

• The substance which is dispersed is called as dispersed phase.

• Depending upon whether the dispersed phase and dispersion medium are solid, liquid or gas, eight types of colloidal systems are possible.

• In face cream both the dispersed face and dispersion medium is liquid.

         This is called emulsion.

So, the correct answer will be option a.