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How will you prepare colloidal solution of gold?
Important Questions on Adsorption and Colloids
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The diagram given below represents a method for the preparation of colloids. With reference to the diagram answer the questions that follow :
What is the nature of the sol obtained by this method ---lyophilic or lyophobic? Identify A in this diagram.

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A colloidal solution of is prepared by two different methods as shown below :
What is the charge on colloidal particles in the two test tubes (A) and (B) ?

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Write short note on the following-
Peptisation

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The correct order of their coagulating power is

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