Question

The dispersed phase and dispersion medium in smoke, respectively, are: 
 

• A. solid, gas
• B. gas, gas
• C. gas, solid
• D. solid, solid

Hint:

Colloidal systems are classified based on the dispersed phase and dispersion medium. Smokes are an example of an aerosol where fine solid particles are dispersed in a gaseous medium.

Answer 1

The Correct Option is A

Smoke is a colloidal system in which solid particles (such as carbon and other particulates) are dispersed in a gaseous medium (air). 
- Dispersed Phase: Solid particles 
- Dispersion Medium: Gas (air) Such systems are categorized as aerosols, which include both smokes (solid in gas) and fogs (liquid in gas).