The movement of sol particles under an applied electric field is called:
A
electro deposition
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B
electrodialysis
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C
electro-osmosis
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D
electrophoresis
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Solution
The correct option is D electrophoresis Electrodeposition (Electroplating): A process that uses electrical current to reduce dissolved metal cations so that they form a coherent metal.
Electrodialysis: Dialysis can be fastened by applying an electric field if the substance in true solution is an electrolyte. This process is then called electrodialysis. By means of electrodialysis it is possible to get a colloid in pure state in short time, although the electric current does not affect non-conducting impurities such as alcohol, sugar, etc.
In electro-osmosis, liquid with free charge move under external electric field where charged solid is stationary.
Solution particles carry charge and thus, move towards opposite electrodes under the influence of electric field and the phenomenon is known as cataphoresis or electrophoresis.