Question detail
Why are unreacted nitrogen and hydrogen recycled in the Haber process?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
The Haber process and the use of NPK fertilisers
Question
- A. To increase the yield of ammonia
- B. To reduce the cost of raw materials
- C. To speed up the reaction rate
- D. To prevent environmental pollution
Answer
The correct option is To increase the yield of ammonia. This answer is correct because it matches the approved learning objective to explain why unreacted nitrogen and hydrogen are recycled. (Chemistry only) in the subtopic The Haber process.
Explanation
The correct option is To increase the yield of ammonia. To increase the yield of ammonia is correct because it directly supports the approved learning objective to explain why unreacted nitrogen and hydrogen are recycled. (Chemistry only). This belongs to the subtopic The Haber process within The Haber process and the use of NPK fertilisers, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from The Haber process.
Common mistake
Recycling in the Haber Process
Students often think that unreacted nitrogen and hydrogen are recycled to increase the amount of ammonia produced in the next cycle.
Explain that unreacted nitrogen and hydrogen are recycled primarily to improve the efficiency of the process and reduce waste, not just to increase ammonia yield.
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