| Colloidal solution | Type |
| I Cheese | Gel |
| II Hair cream | Emulsion |
| III Mist | Aerosol |
| IV Whipped cream | Solid foam |
A) I
B) II
C) III
D) IV
Correct Answer: D
Solution :
Solid foam \[\Rightarrow \] Gas in solid (actually whipped cream is colloidal solution gas in liquid). Emulsion \[\Rightarrow \] Liquid in liquid Aerosol\[\Rightarrow \] Solid or liquid in gas
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