Question

Match the colloids in Column-I with classifications in Column-II

Answer 1

When dispersion medium is gas, the dispersed phase can be solid or liquid but not the gas. colloids of gas with dispersed phase as solid or liquids are called aerosols.In rain cloud, dispersed phase is solid and medium is gas. Thus A matches with 3 & 4. When dispersed phase is solid and medium is gas, it forms smoke and because dispersed medium is gas so it is also aerosol.Thus B matches with 3 & 4.In Soap Sud, dispersion medium is liquid, the dispersed phase as gas, that makes foam. Thus D matches with 2.Butter can be referred as both emulsion colloid and gel colloid. This is because it can be dispersed in either fat or liquid.
Thus C matches with 1.