St. Britto Hr. Sec. School - Madurai
12th Chemistry Monthly Test - 2 ( Surface Chemistry )-Aug 2020
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What is an interface?
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Define adsorption isobar.
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Name the types of emulsions.
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What are emulsions?
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Differentiate physisorption and chemisorption.
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What are the methods by which colloids are prepared?
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What are the factors affecting adsorption?
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Explain the kinetic property of colloids.
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Define Deemulsification.
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What is ultrasonic dispersion?
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Explain any one method for coagulation
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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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Name the factors that affect adsorption.
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What are the factors which influence the adsorption of a gas on a solid?
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In a coagulation experiment, 10 mL of a colloid (X) is mixed with distilled water and 0.1M solution of an electrolyte AB so that the volume is 20 mL. It was found that all solutions containing more than 6.6 mL of AB coagulate within 5 minutes. What is the flocculation values of AB for sol (X)?
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Explain O/W and W/O types of emulsions with examples.
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Which will adsorb more gas, a lump of charcoal or its powder and why?
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Why does bleeding stop by rubbing moist alum?
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Explain intermediate compound formation theory of catalysis with an example.
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Define adsorption isotherm.
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Explain the factors affecting adsorption.
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Write any five applications of colloids in day - to day life.
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Write the characteristics of catalysts.
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Explain the electrical property of colloids with a neat diagram.
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Give the special characteristics of enzyme catalysed reactions.
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Write the characteristics of adsorption.
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Write a note on Freundlich adsorption isotherm.
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Explain the following
(i) Reactant selectivity
(ii) Transition state selectivity
(iii) Product selectivity -
Explain the various chemical methods by which colloids can be prepared.
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Write a note on phase transfer catalysis.
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Name the method to deduce the charge of the sol particle. Explain it with a neat diagram.