CBSE Class 12 Chemistry Surface Chemistry Quiz 3

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CBSE › Class 12 › Chemistry › Surface Chemistry

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1. Which of the following is not a method for coagulation of lyophobic sols?

A By electrophoresis B By mixing oppositely charged sols C By adding electrolyte D By adding a protective colloid

2. Why is alum added to water containing suspended impurities?

A To make acolloidal solution B To coagulate the suspended impurities C To remove impurities of calcium and magnesium D To protect the colloidal solution from gening precipitated

3. Movement of dispersion medium under the influence of electric field is known as

A electrodialysis B electrophoresis C electroosmosis D cataphoresis

4. Which of the following is not a method of removing impurities from a colloidal sol?

A Electrodialysis B Ultrafiltration C Ultra centrifugation D Distillation

5. The substances which behave as colloidal solutions at higher concentration are called

A associated colloids B multimolecular colloids C macromolecular colloids D protective colloids

Practice more on Surface Chemistry

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