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प्रश्न
What happens when an emulsion is centrifuged?
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उत्तर
An emulsion is centrifuged because it is a colloidal dispersion. Also, it exhibits all the properties shown by colloidal sols, that is, Tyndall effect, Brownian movement, electrophoresis, etc.
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संबंधित प्रश्न
Define the following term:
Zeta potential
Define the following term : Brownian movement
What happens when a freshly prepared precipitate of Fe(OH)3 is shaken with a small amount of FeCl3 solution?
How does it become possible to cause artificial rain by spraying silver iodide on the clouds?
What causes brownian motion in colloidal dispersion?
Match the statement given in Column I with the phenomenon given in Column II.
| Column I | Column II |
| (i) Dispersion medium moves in an electric field | (a) Osmosis |
| (ii) Solvent molecules pass through semi permeable membrane towards solvent side |
(b) Electrophoresis |
| (iii) Movement of charged colloidal particles under the influence of applied electric potential towards oppositely charged electrodes |
(c) Electroosmosis |
| (iv) Solvent molecules pass through semi permeable membranes towards solution side |
(d) Reverse osmosis |
Which of the following is used for removing change on colloidal solution?
Gold number is associated with:-
The important factor in the stabilization of a colloidal solution is ______
The conditions given below are in the context of observing Tyndall effect in colloidal solutions:
- The diameter of the colloidal particles is comparable to the wavelength of light used.
- The diameter of the colloidal particles is much smaller than the wavelength of light used.
- The diameter of the colloidal particles is much larger than the wavelength of light used.
- The refractive indices of the dispersed phase and the dispersion medium are comparable.
- The dispersed phase has a very different refractive index from the dispersion medium.
Choose the most appropriate conditions from the options given below:
