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| Q. |
Cloud is a colloidal dispersion of – |
| A. | Air in a dispersion medium of water |
| B. | Fog in a dispersion medium of water |
| C. | Mist in a dispersion medium of air |
| D. | Water drops in a dispersion medium of air |
| Answer» D. Water drops in a dispersion medium of air | |
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Explanation: A colloid is a substance microscopically dispersed evenly throughoutanother substance. A colloidal system consists of two separate phases: a dispersed phase (or internal phase) and a continuous phase (or dispersion medium) in which the colloid is dispersed. A colloidal system may be solid, liquid, or gas. Cloud is a colloidal dispersion of Water drops in a dispersion medium of air. |
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