Question detail
Why is air preferred over pure nitrogen gas for 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. It contains more oxygen for the reaction
- B. It is cheaper and readily available
- C. It increases the pressure of the reactor
- D. It provides a catalyst for the reaction
Answer
The correct option is It is cheaper and readily available. This answer is correct because it matches the approved learning objective to recall air as a source of nitrogen for the Haber process. (Chemistry only) in the subtopic The Haber process.
Explanation
The correct option is It is cheaper and readily available. It is cheaper and readily available is correct because it directly supports the approved learning objective to recall air as a source of nitrogen for the Haber process. (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
Source of Nitrogen Confusion
Students often confuse air with nitrogen gas, thinking air is purely nitrogen.
Remember that air is a mixture of gases, with nitrogen being the main component but not the only one.
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