Question

Addition of lyophilic solution to the emulsion forms :

• A. a protective film around the dispersed phase
• B. a protective film around the dispersion medium
• C. an aerosol
• D. true solution

Answer 1

The correct option is A a protective film around the dispersed phase

An emulsion is a colloidal system consisting of immiscible liquids.

For example, milk is an emulsion in which particles of liquid fat are dispersed in water.

In common occurrence, however, one of the liquids is water and the other oily substance insoluble in it. The suspended droplets are larger than the particles of the sols. It is because of the density differences between the phases being small. Emulsion droplets can be observed under an ordinary microscope and sometimes, even with a magnifying lens.
Addition of lyophilic solution to the emulsion forms a protective film around the dispersed phase.