Question

Q. 20. What are colloids? State their characteristics.​

Answer 1

Answer:

A colloid may consist of particles suspended in a gas, liquid or solid, although many colloidal properties are most pronounced in liquid colloids. Gas colloids consist of particles suspended in the air or a gas medium, and include fog, smoke and atmospheric dust.

Colloidal characteristics :

• It must be heterogeneous, i.e., consist of dissimilar constituents, for example silver and water.
• It must be heterogeneous, i.e., consist of dissimilar constituents, for example silver and water.It must be multiphasic, i.e., solid/liquid, gas/liquid, etc.
• It must be heterogeneous, i.e., consist of dissimilar constituents, for example silver and water.It must be multiphasic, i.e., solid/liquid, gas/liquid, etc.The particles must be insoluble in the solution or suspension.

Answer 2

Explanation:

A colloid may consist of particles suspended in a gas, liquid or solid, although many colloidal properties are most pronounced in liquid colloids. Gas colloids consist of particles suspended in the air or a gas medium, and include fog, smoke and atmospheric dust.