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Define manure. What are different manures and how do they affect the soil?
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Distinguish between farmyard manure and compost manure.
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Give two limitations of using manure.
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Name the three most important nutrients required for plant growth.
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Classify nutrients according to their sources.
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Distinguish between macronutrients and micronutrients. Give suitable examples.
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What are emulsions? What are their different types? Give example of each type.
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What are lyophilic and lyophobic sols ? Give one example in each case.
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Discuss the effect of pressure and temperature on the adsorption of gases on solids.
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What role does adsorption play in heterogeneous catalysis?
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What are the factors which influence the adsorption of a gas on a solid?
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Give reason why a finely divided substance is more effective as an adsorbent?
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The charged currents in the outer conducting regions of the earth’s core are
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Explain the term reconciliation
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