Question

Whipped cream is an example of which of these?
[Note: dispersed phase – dispersion medium phase)
A) Liquid – gas
B) Gas – liquid
C) Liquid – liquid
D) Solid - liquid

Answer 1

Hint: We must have to know that matters are divided into three types. There are solids, liquids and gas. The liquids are further classified as three types. This classification is based on the appearance of the liquid. There are suspension, true solution and colloidal solution.

Complete answer:
We have known that the homogeneous mixture of two or more substances is called colloidal solutions. One of the substances in the colloidal solution is smaller. Dispersed phase and dispersion medium phase are important terms of colloidal solutions.
 Dispersed phase is nothing but a smaller amount of substance present in the colloidal solution.
Dispersed medium phase is nothing but more amount of substance present in the colloidal solution.
Colloidal solutions are also classified as eight types. These types depend on the physical state of the dispersed phase – dispersion medium phase.
There are
Liquid – gas, Gas – liquid, liquid – liquid, solid – liquid, liquid – solid, gas – solid, solid – solid and solid – gas.
Whipped cream is an example of Gas – liquid. (Dispersed phase – dispersion medium phase)

Hence, option B is the correct answer.

Note:
Depend on the dispersed medium phase, colloidal solution is classified. There are three types. One is hydrosols, benzosols and alcohols. Hydrosols are nothing but the dispersed medium phase is water. Benzosols are nothing but the dispersed medium phase is benzene. Alcohol is nothing but the dispersed medium phase is alcohol. Colloidal solutions are also classified as two types. These types are depends on the attraction between dispersed phase and dispersion medium phase. There are lyophilic colloids and lyophobic colloids.