St. Britto Hr. Sec. School - Madurai
12th Chemistry Monthly Test - 3 ( Surface Chemistry )-Aug 2020
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Comment on the statement: Colloid is not a substance but it is a state of substance.
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What are lyophilic colloids? Give example
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What are the concepts of catalysis that intermediate compound formation theory throws ight on?
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Describe some feature of catalysis by Zeolites.
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What happens when a colloidal sol of Fe(OH)3 and AS2Os are mixed?
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What is an interface?
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Name various techniques by which a colloid can be deemulsified.
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What are catalytic poisons? Give an example.
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How is coagulation brought about by addition of electrolytes?
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Define Gold number.
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What are the tests used to identify the type of emulsion?
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Write a note on auto catalysis?
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Define adsorption.
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What are the important concepts of catalysis that adsorption theory explains?
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Why does physisorption decrease with increase of temperature?
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Explain the preparation of colloidal platinum by Bredig arc method.
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What are active centres?
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Explain the factors affecting adsorption.
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Give the special characteristics of enzyme catalysed reactions.
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Name the method to deduce the charge of the sol particle. Explain it with a neat diagram.
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Explain the various chemical methods by which colloids can be prepared.
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Explain electrodialysis.
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Write the characteristics of catalysts.
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Write any five applications of colloids in day - to day life.
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Write a note on phase transfer catalysis.
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Write the characteristics of adsorption.
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