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Revisions

Industrial Chemistry

Grade

13

Level 1 — Basic Recall (1–10)

  1. What is an industrial process?

  2. Name the process used to manufacture ammonia.

  3. Name the process used to manufacture sulfuric acid.

  4. What is the catalyst used in the Haber process?

  5. State the catalyst used in the Contact process.

  6. Name a raw material used in the Solvay process.

  7. What is meant by “yield”?

  8. Define “reaction rate.”

  9. What is meant by “feedstock”?

  10. What is a by-product?


Level 2 — Understanding (11–20)

  1. Explain why high pressure favours ammonia formation in the Haber process.

  2. Explain the role of catalysts in industrial reactions.

  3. Why is moderate temperature used in the Haber process instead of very high temperature?

  4. Describe the environmental importance of the Contact process.

  5. Explain how limestone is involved in the Solvay process.

  6. Why must nitrogen be purified before entering the Haber reactor?

  7. Explain the term “continuous process.”

  8. What is meant by “recycling unreacted gases”?

  9. Explain how chlorine is produced in the electrolysis of brine.

  10. Describe safety precautions used in industrial plants.


Level 3 — Application (21–30)

  1. Predict the effect of lowering temperature on ammonia yield.

  2. Predict the effect of increasing pressure on sulfur trioxide yield.

  3. Explain why ammonia plants recycle nitrogen and hydrogen.

  4. Compare batch vs continuous manufacturing.

  5. Calculate percentage yield given actual and theoretical yield values.

  6. Suggest reasons for energy loss in industrial plants.

  7. Predict products of brine electrolysis under different conditions.

  8. Suggest why catalysts need to be replaced or regenerated.

  9. Describe how pollution is minimized in the Contact process.

  10. Explain why CO₂ removal is necessary in ammonia production.


Level 4 — Analysis (31–40)

  1. Analyse how optimizing temperature and pressure improves ammonia production efficiency.

  2. Compare catalysts based on activity, selectivity, and lifespan.

  3. Evaluate the environmental impact of nitrogen fertilizers.

  4. Discuss energy-saving strategies used in large-scale plants.

  5. Analyse why side reactions must be minimized in industrial processes.

  6. Compare purity requirements for chemical feedstocks in different industries.

  7. Evaluate the benefits of heat-exchange systems in reactors.

  8. Explain why fluidized-bed reactors are used in the Contact process.

  9. Analyse the sustainability of the Solvay process.

  10. Compare different chlor-alkali processes (diaphragm, membrane, mercury cell).


Level 5 — Exam/Challenge (41–50)

  1. Explain, using Le Chatelier’s principle, the complete optimization of Haber process conditions.

  2. Evaluate the economic trade-offs between high pressure and high yield in ammonia production.

  3. Derive the reaction steps of the Contact process and explain catalyst function in each.

  4. Explain how waste heat recovery improves process efficiency thermodynamically.

  5. Propose improvements to reduce environmental footprint of ammonia factories.

  6. Analyse an industrial flow diagram to identify inefficiencies and propose fixes.

  7. Explain why catalyst poisoning occurs and how it affects industrial output.

  8. Assess the impact of green chemistry principles on modern industrial processes.

  9. Compare electrolysis methods in detail and analyse their economic implications.

  10. Suggest possible future alternatives to the Haber process (bio-fixation, low-energy routes) and evaluate feasibility.


වියාචනය (Disclaimer)

Idasara Academy ඉගෙනුම් සම්පත් නිර්මාණය කර ඇත්තේ සිසුන්ට මගපෙන්වීම, පුහුණුව සහ අධ්‍යයන උපායමාර්ග ලබාදී සහයෝගය දැක්වීමටය.

කෙසේ වෙතත්, සියලුම විභාග සහ නිල අවශ්‍යතා සඳහා, සිසුන් අනිවාර්යයෙන්ම ශ්‍රී ලංකා අධ්‍යාපන අමාත්‍යාංශයේ, අධ්‍යාපන ප්‍රකාශන දෙපාර්තමේන්තුව විසින් ප්‍රකාශයට පත් කරන ලද නිල පෙළපොත් සහ සම්පත් පරිශීලනය කළ යුතුය.

ජාතික විභාග සඳහා අන්තර්ගතයේ නිල බලය ලත් මූලාශ්‍රය වනුයේ රජය විසින් නිකුත් කරනු ලබන මෙම ප්‍රකාශනයි.

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