Question detail
What is the primary role of ammonia in the context of NPK fertilisers?
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 act as a catalyst
- B. To provide nitrogen
- C. To enhance potassium levels
- D. To increase phosphorus availability
Answer
The correct option is To provide nitrogen. This answer is correct because it matches the approved learning objective to explain that ammonia can be used to manufacture nitric acid. (Chemistry only) in the subtopic Production and uses of NPK fertilisers.
Explanation
The correct option is To provide nitrogen. To provide nitrogen is correct because it directly supports the approved learning objective to explain that ammonia can be used to manufacture nitric acid. (Chemistry only). This belongs to the subtopic Production and uses of NPK fertilisers 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 Production and uses of NPK fertilisers.
Common mistake
Confusing Ammonia Uses
Students often confuse the use of ammonia in making nitric acid with its use in making ammonium salts.
Remember that ammonia can be used to manufacture both nitric acid and ammonium salts, but they are distinct processes.
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