Question

Which of the following is a liquid form of aerosol?

• A. Fume
• B. Dust
• C. Mist
• D. Smoke

Answer 1

The correct option is C

Mist

Explanation for correct option:

C. Mist

Aerosols:

• Depending upon whether the dispersing medium and dispersed phase are gas, liquid, or solid, eight types of colloidal systems are possible.
• When the dispersed phase is liquid or solid, and the dispersing medium is gas, then the colloids formed are referred to as aerosols.

Examples of Aerosol:

• Fog and mist are examples of aerosols where the dispersed phase is liquid and the dispersing medium is gas.
• Smoke and automobile exhaust are examples of aerosols where the dispersed phase is solid and the dispersing medium is gas.

Explanation for incorrect options:

A. Fume is a colloidal mixture in which the dispersed phase and dispersion medium are gas.

B. Dust is a colloid if suspended in the air. It consists of a solid in a gas.

D. Smoke is a colloidal solution of solid in gas

Hence, the correct option is C i.e. mist.