FORM 3 CHEMISTRY ONLINE TEST SERIES PRODUCTION OF AMMONIA 1. Plants need nitrogen to grow. How do we ensure that plants get the nitrogen that they need? A. Increase the amount of nitrogen in the air around the plants B. Increase the amount of nitrogen in the soil around the plants’ roots C. Increase the amount of nitrates in the soil around the plants’ roots D. Increase the amount of nitrates in the air around the plants 2. Why can’t plants use the nitrogen in the air? A. It’s unreactive B. It can’t get into their leaves C. It doesn’t dissolve in water D. It can’t get into their roots 3. What is the name of the process which turns nitrogen into ammonia? A. Nitrogen process B. Contact process C. Haber process D. Ammonia process 4. The raw materials for the Haber process are… A. Nitrogen from the air hydrogen from water Nitrogen from the sea hydrogen from natural gas Nitrogen from ammonia hydrogen from the air Nitrogen from the air hydrogen from natural gas 5. Name the catalyst used in the Haber process. A. Platinum B. Iron C. Vanadium (V) oxide D. Nickel catalyst 6. Pick the temperature at which the Haber process takes place most efficiently. 20 Degrees C 200 Degrees C 450 Degrees C 900 Degrees C 7. Pick the pressure at which the Haber process is carried out. 200 atmospheres 100 atmospheres 50 atmospheres 1 atmosphere 8. The reaction that produces ammonia is reversible. What does this mean? A. The ammonia breaks down again into hydrogen and nitrogen B. The ammonia doesn’t break down into hydrogen and nitrogen C. Ammonia is produced but then it reproduces itself D. The hydrogen and nitrogen never stop reacting 9. To reduce the breaking down of ammonia into nitrogen and hydrogen, what is done? A. Water is added to the ammonia B. The nitrogen and hydrogen are forced to stop reacting C. The ammonia is added to the hydrogen and nitrogen D. The ammonia is cooled and removed 10. Pick the correct equation for the Haber process. A. N2 + 3H2 ¨ 2NH3 B. N2 + 3H2 ⇌ NH3 C. N2 + 3H2 ⇌ 2NH3 D. N2 + H2 ⇌ NH3 Loading … Question 1 of 10
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