41.Why is a lyophilic colloid more stable than a lyophobic colloid?
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42.What is an aerosol?
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43.What is a gel? Give one example?
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44.What do you mean by the selectivity of the catalyst?
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45.Deltas are formed where the river and sea water meet. Give reasons.
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46.What is the effect of increase of temperature on the adsorption of a gas on a solid surface?
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47.Write the name of the states of (i) dispersed phase and, (ii) dispersion medium in the case of butter.
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48.Write a mathematical expression showing relationship between the amount of solute adsorbed per unit mass of the solid adsorbent and the concentration of the solute in solution.
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49.What do x and m represent in the following expression:
Short Answer Type
