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Quiz 2
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Why is alum added to water containing suspended impurities?
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To make acolloidal solution
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To coagulate the suspended impurities
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To remove impurities of calcium and magnesium
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To protect the colloidal solution from gening precipitated
Explanation
To coagulate the suspended impurities
Movement of dispersion medium under the influence of electric field is known as
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electrodialysis
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electrophoresis
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electroosmosis
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cataphoresis
Explanation
electroosmosis
Which of the following is not a method of removing impurities from a colloidal sol?
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Electrodialysis
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Ultrafiltration
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Ultra centrifugation
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Distillation
Explanation
Distillation
The substances which behave as colloidal solutions at higher concentration are called
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associated colloids
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multimolecular colloids
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macromolecular colloids
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protective colloids
Explanation
associated colloids
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