101.
What is an adsorption isotherm ? Describe Freundlich adsorption isotherm.
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Short Answer Type
102.What do you understand by activation of adsorbent? How is it achieved?
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103.What role does adsorption play in heterogeneous catalysis?
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104.Why is adsorption always exothermic?
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Long Answer Type
105.How are the colloidal solutions classified on the basis of physical states of the dispersed phase and dispersion medium?
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106.Discuss the effect of pressure and temperature on the adsorption of gases on solids.
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107.What are lyophilic and lyophobic sols? Give one example of each type. Why are hydrophobic sols easily coagulated?
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108.What is the difference between multimolecular and macromolecular colloids? Give one example of each. How are these two types of colloids different from these two types of colloids?
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109.What are enzymes? Write in brief the mechanism of enzyme catalysis.
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110.How are colloids classified on the basis of (i) physical states of components (ii) nature of dispersed phase and (iii) interaction between dispersed phase and dispersion medium?