Question

Which is not a colloidal solution of gas in liquid?
A.Froth
B.Foams with tiny bubbles
C.Mist
D.Whipped cream

Answer 1

Hint: We must know that one of three types of mixtures is a colloid. A colloid contains particles, which are in the range of 1 and 1000 nanometres. They are also called colloidal dispersion since the particles remain dispersed and do not settle at the solution’s bottom.

Complete step by step answer:
We have to know that in colloids, one substance is dispersed evenly in matter, the substance being dispersed is called a dispersed phase, and the medium in which it is dispersed is caked as a dispersion medium.
Some examples of colloids are whipped cream, marshmallows, milk, fogs, butter, sol and gels, mayonnaise, toothpaste etc.
Let us see about the types of colloids. Colloids are of four types namely,
-Sol: Colloidal suspension of solid particles in liquid.
-Emulsion is seen between two liquids.
-Foam happens when gas is trapped in solid or liquid.
-Aerosol comprises liquid or solid particles dispersed in a gas.
We can address the colloidal system as called hydrocolloid, when water is used as a dispersion medium.
We can see that foam and froth are examples of gas dispersed in liquid.
A colloidal solution of gas dispersed in liquid is a whipped cream.
An example of liquid droplets dispersed in gas is mist.
For the above question, mist is not a colloidal solution of gas in liquid.
Therefore, we can mark the correct option as (C).
Note:
Colloidal solutions have some of the given characteristics.
-Type of interactions due to electromagnetic radiation
-Thermal kinetic energy supporting the mobility