Question

The dispersion medium in aerosol is gas. If true enter 1, else enter 0.

Answer 1

Hint: A colloidal system is basically a phase separated mixture which consists of two main phases: dispersion medium and dispersed phase. Aerosol, as the name suggests is a mixture of air as dispersed medium and solid as dispersed phase.

Complete step by step answer:
A colloidal system has a dispersion medium and a dispersion phase, analogous to a solution which contains solute particles and solvent particles. When solute particles are mixed with solvent particles, the solution is formed. Similarly, a colloidal solution has a dispersion medium that acts like the solute particles present in a solution whereas dispersion medium acts like the solvent in the solution.
Aerosol is a colloidal solution in which dispersion mediums are gases and dispersed phases can either be solid or liquid particles. For example, fog is an aerosol which is easily visible to us. It has tiny droplets of water or ice crystals as dispersed phase or solute suspended in the air present in the atmosphere as dispersed medium or solvent.

Hence, it is a true sentence ‘The dispersion medium in aerosol is gas’ ,1.

Note:
There are many types of colloidal solutions on the basis of physical state of dispersion medium and dispersed phase; other than aerosol (solid or liquid in gas), such as emulsion(liquid in liquid), sol (solid in liquid) and foam (gas in solid or liquid).