Multiple choice

In which of the following colloids is the dispersion medium a gas and the dispersed phase a solid?

  1. Milk of magnesia

  2. Smoke

  3. Cloud

  4. Milk

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Milk of magnesia is a colloid in which the dispersed phase is a solid and the dispersion medium is a liquid. Smoke has a gas as the dispersion medium and a solid as the dispersed phase. Cloud is a colloid in which the dispersed phase is a liquid and the dispersion medium is a gas. Milk is a colloid in which both the dispersed phase and the dispersion medium are liquids.  Thus, option (2) is correct.