Define the following:
- Sol
- Aerosol
- Emulsion
- Foam
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- Sol: Sol is a colloid in which tiny solid particles are dispersed in a liquid medium.
- Aerosol: Aerosol is a colloid in which a solid or liquid is dispersed in a gas.
- Emulsion: An emulsion is a colloid in which minute droplets of one liquid are dispersed in another liquid which is not miscible with it.
- Foam: A foam is a colloid in which a gas is dispersed in a liquid medium.
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