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easyMCQNEET 20232026Chemistry
1 mark

Pumice stone is an example of:

  1. A
    Sol
  2. B
    Gel
  3. C
    Solid sol
  4. D
    Foam

Solution & Step-by-step Explanation

Colloidal systems are classified by the phase of the dispersed substance and the dispersion medium.Pumice stone is a volcanic rock with many air bubbles trapped inside. The dispersed phase is Gas and the dispersion medium is Solid. This type of colloid is called a Solid sol (sometimes specifically referred to as a solid foam).Based on standard NCERT classification: Solid sol.

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Pumice stone is an example of:
A
Sol
B
Gel
C
Solid sol
D
Foam

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