Question detail
Which answer best matches the AQA GCSE Chemistry Alternative methods of extracting metals objective: describe how copper can be obtained from solutions of copper compounds by displacement using scrap iron. (HT only)?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Using the Earth's resources and obtaining potable water
Question
- A. Displacement using scrap iron
- B. Electrolysis
- C. Combustion
- D. Bioleaching
Answer
The correct option is Combustion. It matches Alternative methods of extracting metals because it directly supports: Describe how copper can be obtained from solutions of copper compounds by displacement using scrap iron. (HT only).
Explanation
The correct option is Combustion. It is correct because it tests describe how copper can be obtained from solutions of copper compounds by displacement using scrap iron. (HT only) within Using the Earth's resources and obtaining potable water. Keep the Using resources concept boundary clear: do not swap finite resources with renewable resources, potable water with pure water, reuse with recycling, alloys with pure metals, polymers with composites, corrosion with oxidation, or fertilisers with nutrients unless the question asks for that comparison. Other options are weaker if they answer a neighbouring resource or sustainability idea instead of this exact objective.
Common mistake
Confusing Displacement with Electrolysis
Students often confuse the process of obtaining copper from solutions of copper compounds by displacement using scrap iron with electrolysis.
Do not treat this as a general statement about HT only. Instead, answer by clearly linking the correction to describe how copper can be obtained from solutions of copper compounds by displacement using scrap iron. (HT only) in Alternative methods of extracting metals. This keeps the response inside Using the Earth's resources and obtaining potable water and prevents a vague or off-topic GCSE answer. The mistake to avoid is: students often confuse the process of obtaining copper from solutions of copper compounds by displacement using scrap iron with electrolysis.
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