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2023 Surface Chemistry Colloids – Classification Based on Physical State Medium Question 2 of 30 in Surface Chemistry

Pumic stone is an example of:

A foam

B sol

C gel

D solid sol

The answer is D.

Solution

Pumice stone is a solid sol (gas dispersed in a solid).

Pumice stone is an example of solid sol. In this type of colloid, the dispersion medium is solid and the dispersed phase is gas.

Concept solid sol

Surface Chemistry in past papers

30 questions from this chapter have appeared across 20 exam years.