Question detail

In the Haber process, what happens to the unreacted nitrogen and hydrogen?

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

  1. A. They are released into the atmosphere
  2. B. They are cooled and condensed
  3. C. They are recycled back into the reactor
  4. D. They are converted into other gases

Answer

The correct option is They are recycled back into the reactor. 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 They are recycled back into the reactor. They are recycled back into the reactor 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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recall MCQ 3: hydrogen are recycled. (Chemistry… | The Haber… | ExamCompanion