Question

Mark the incorrect combination out of the following examples of colloidal solutions.

• A. (Colloid)Smoke (Dispersion medium) Gas (Dispersed phase) Solid
• B. (Colloid)Mist (Dispersion medium) Gas (Dispersed phase) Liquid
• C. (Colloid)Gel (Dispersion medium) Liquid (Dispersed phase) Liquid
• D. (Colloid)Emulsion (Dispersion medium) Liquid (Dispersed phase) Liquid

Answer 1

The correct option is C (Colloid)Gel (Dispersion medium) Liquid (Dispersed phase) Liquid

• A colloid is a heterogeneous system in which one substance is dispersed (dispersed phase) as very fine particles in another substance called dispersion medium.
  
• Smoke is a colloid in which Dispersion medium is Gas and Dispersed phase is solid.
• Mist is a colloid in which Dispersion medium is Gas and Dispersed phase is liquid.
• The gel is a colloid in which Dispersion medium is solid and Dispersed phase is liquid. Example: Cheese, Butter, jellies, etc.
• The emulsion is a colloid in which Dispersion medium is Liquid and Dispersed phase is liquid.