Question

Fog is a colloidal solution of:
A) Liquid particles dispersed in a gas
B) Gaseous particles dispersed in a liquid
C) Solid particles dispersed in a liquid
D) Solid particles dispersed in a gas

Answer 1

Fog is a phase which we mostly see in winter mornings. The coldness in the air causes fog. One can think about the possibilities which can be present in an option and make the correct choice.

Complete step by step answer:

1. First of all, we will discuss the fog and let's see for the phase in which it is present. The fog is a kind of thing that we generally experience in the winter season mornings.
2. The white dense cloudy looking fog happens due to the cold weather in the atmosphere. As we know the atmosphere has water molecules in the vapor phase.
3. When there is a coldness in the atmosphere which is generally the case in winters the water molecules present in the vapor phase get condensed and converted into liquid which is the form of a colloidal solution.
4. But due to the very less weight of the water molecules, they are still present in the atmosphere which makes the atmosphere cloudy appearance in which the water vapor molecules are dispersed in the atmospheric air which is the gaseous phase.
   Therefore, we can say the fog is a colloidal solution of the liquid particles that are dispersed in the gas phase which shows option A as the correct choice of answer.

Note: The colloidal solution has very minute size particles and they are evenly distributed throughout the solution. The fog is also called an aerosol which means it has water droplets or ice crystals suspended in the air.