Surface Chemistry - Result Question 11
11. Among the colloids cheese $(C)$, milk $(M)$ and smoke $(S)$, the correct combination of the dispersed phase and dispersion medium, respectively is
(2019 Main, 11 Jan II)
(a) $C:$ liquid in solid; $M$ : liquid in liquid; $S:$ solid in gas
(b) $C:$ solid in liquid; $M:$ liquid in liquid; $S:$ gas in solid
(c) $C:$ liquid in solid; $M$ : liquid in solid; $S:$ solid in gas
(d) $C:$ solid in liquid; $M:$ solid in liquid; $S:$ solid in gas
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Answer:
Correct Answer: 11. (a)
Solution:
| Dispersed phase |
Dispersion medium |
Type of colloid |
Examples |
|---|---|---|---|
| Liquid | Solid | Gel | Cheese (C), butter, jellies |
| Liquid | Liquid | Emulsion | Milk (M), hair cream |
| Solid | Gas | Aerosol | Smoke (S), dust |
Thus, $C$ : liquid in solid, $M$ : liquid in liquid and $S$ : solid in gas.
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