Question:
Pumice stone is an example of
Pumice stone is an example of
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Gas dispersed in solid forms solid foam, while gas in liquid forms foam.
Updated On: Mar 28, 2026
- Solid sol
- Emulsion
- Aerosol
- Solid foam
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The Correct Option is D
Solution and Explanation
Step 1: Understanding pumice stone.
Pumice stone is a volcanic rock that contains a large number of air-filled cavities trapped in a solid matrix.
Step 2: Classification of colloids.
When gas is dispersed in a solid medium, the colloidal system formed is called a solid foam.
Step 3: Conclusion.
Since pumice stone consists of gas trapped in solid, it is a solid foam.
Pumice stone is a volcanic rock that contains a large number of air-filled cavities trapped in a solid matrix.
Step 2: Classification of colloids.
When gas is dispersed in a solid medium, the colloidal system formed is called a solid foam.
Step 3: Conclusion.
Since pumice stone consists of gas trapped in solid, it is a solid foam.
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