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B
Dialysis
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C
Centrifugation
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D
Osmosis
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Solution
The correct option is B Dialysis
Given : The colloidal solutions are purified by ?
Solution :
Colloidal solutions can be purified by dialysis. It may be defined as the process of separating a crystalloid from a colloid by diffusion or filtration through a fine membrane. The process of dialysis can be quickened by using hot water (hot dialysis) or by applying an electric field (electrodialysis).