Problem 86
Question
Choose the best answer: A colloidal dispersion of one liquid in another is called (a) a gel, (b) an emulsion, (c) a foam, (d) an aerosol.
Step-by-Step Solution
Verified Answer
The best answer is (b) an emulsion, as it is the correct term for a colloidal dispersion of one liquid in another.
1Step 1: Understand the terms
(a) A gel is a semi-solid system made up of a solid-like network dispersed in a liquid. It is not a colloidal dispersion of one liquid in another.
(b) An emulsion is a mixture of two liquids that don't dissolve in each other with one liquid being dispersed as tiny droplets in the other liquid. It is a colloidal dispersion of one liquid in another.
(c) A foam is a substance that is formed by trapping air or gas bubbles inside a liquid or solid. It is not a colloidal dispersion of one liquid in another.
(d) An aerosol is a suspension of fine solid or liquid particles in a gas. It is not the colloidal dispersion of one liquid in another.
2Step 2: Choose the best answer
Out of the given options, (b) an emulsion is the correct term for a colloidal dispersion of one liquid in another. Therefore, the answer is (b) an emulsion.
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