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Chapter 6: Problem 8
Migration of colloidal particles under the influence of electric field is called: (a) Browian movement (b) cataphoresis (c) dialy sis
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Which substance gives positive sol? (a) Gold (b) Starch (c) Ferric hydroxide (d) \(\mathrm{As}_{2} \mathrm{~S}_{3}\)
Who gave the rule "Greater the valency, higher is the coagulating power"? (a) Hardy-Schulze (b) Grahm (c) Faraday (d) Lewis
Gold number is measure of (a) amount of gold present in colloidal solution (b) amount of gold required to break the colloid (c) amount of gold required to protect the colloidal (d) none
AgI is used for producing artificial rain because \(\mathrm{AgI}\) (a) has cry stal structure similar to ice (b) is easy to spray at high altitudes (c) is easy to synthesise (d) is soluble in water
Tyndall phenomenon is shown by (a) dilute solutions (b) colloidal solutions (c) suspension (d) true solution.
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