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What is pumice stone an example of?

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in Chemistry – Class 12 by (188k points)
What is pumice stone an example of?

(a) Solid aerosol

(b) Emulsion

(c) Liquid aerosol

(d) Solid foam

This question was addressed to me in homework.

I want to ask this question from Types of Solutions in portion Solutions of Chemistry – Class 12

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The correct answer is (d) Solid foam

The explanation: There are 8 types of colloidal solutions namely solid sol, sol, solid aerosol, gel, emulsion, liquid aerosol, solid foam and foam. Pumice stone is a gas in solid type colloidal solution, i.e., solid foam.

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