NEET-XII-Chemistry
05: Surface Chemistry
- #9How are the colloidal solutions classified on the basis of physical states of the dispersed phase and dispersion medium?
Ans : One criterion for classifying colloids is the physical state of the dispersed phase and dispersion medium. Depending upon the type of the dispersed phase and dispersion medium (solid, liquid, or gas), there can be eight types of colloidal systems.
Dispersed phase
Dispersion medium
Type of colloid
Example
1.
Solid
Solid
Solid Sol
Gemstone
2.
Solid
Liquid
Sol
Paint
3.
Solid
Gas
Aerosol
Smoke
4.
Liquid
Solid
Gel
Cheese
5.
Liquid
Liquid
Emulsion
Milk
6.
Liquid
Gas
Aerosol
Fog
7.
Gas
Solid
Solid foam
Pumice stone
8.
Gas
Liquid
Foam
Froth