Question
Given below the list of some colloids. Make a list selecting them on the basis of type of dispersing medium. Also give the nature of dispersed phase in each.
fog, clouds, shaving cream, milk, face cream, milk of magnesia, foam, rubber, sponge, jelly, cheese, butter, paint, writing ink, smoke, blood, coloured gemstone.
Solution
Selection of colloids on the basis of type, dispersed phase and dispersion medium:
|
Dispersing medium |
Colloids |
Dispersed phase |
Type |
|
1. Gas |
fog, clouds, mist smoke, automobile exhaust |
liquid solid |
aerosol |
|
2. Liquid |
shaving cream, milk, face cream, writing ink, blood, paint milk of magnesia, mud |
gas liquid
solid |
foam emulsion
sol |
|
3. Solid |
foam, rubber, sponge, pumice |
gas
|
foam gel
|
