141.Explain the chemical phenomenon involved in the purification of water using potash alum.
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142.Justify the use of gelatin as a protective colloid.
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143.Some zeolites are used to separate long straight chain hydrocarbons from branched chain hydrocarbons in petrochemical industry. Explain how this separation becomes possible.
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144.How is a colloidal solution purified by ultrafiltration?
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145.Consider the adsorption isotherm given below and interpret the variation in the extent of adsorption (x/m) when:
(i) temperature increases at constant pressure. (ii) pressure increases at constant temperature.
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146.What is the coagulating power of an electrolyte? What is the cause of coagulation?
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147.What are the different steps involved in a heterogeneously catalysed reaction?
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Long Answer Type
148.What are Brownian movement?
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149.Explain the purification of colloidal solutions by dialysis and ultrafiltration.
Short Answer Type
Long Answer Type
