Exams › NEET › Chemistry › Colloids
2 questions with worked solutions.
Q1. A dispersion of liquid in water is an example of a colloidal
Answer: Emulsion
A colloid with liquid droplets dispersed in water is an emulsion, because both phases are liquids. Aerosols involve a liquid or solid dispersed in a gas, foam has gas dispersed in a liquid, and gel is a liquid trapped in a solid network.
Q2. To which of the following category does ice-cream belong?
Answer: Emulsion
Ice-cream contains tiny fat droplets and air dispersed throughout an aqueous phase, so it behaves like an emulsion. It is not a solution because its components are not dissolved at the molecular level.