Question detail
Which process is used to produce soluble salts for fertilisers from phosphate rock?
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. Treatment with nitric acid
- B. Treatment with hydrochloric acid
- C. Treatment with acetic acid
- D. Treatment with phosphoric acid
Answer
The correct option is Treatment with nitric acid. This answer is correct because it matches the approved learning objective to explain that industrial production of NPK fertilisers can use several raw materials and integrated processes. (Chemistry only) in the subtopic Production and uses of NPK fertilisers.
Explanation
The correct option is Treatment with nitric acid. Treatment with nitric acid is correct because it directly supports the approved learning objective to explain that industrial production of NPK fertilisers can use several raw materials and integrated processes. (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
Understanding Raw Materials
Students often think that NPK fertilisers are made from a single raw material.
Remember that NPK fertilisers can be produced using several raw materials and integrated processes.
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