Question detail
What is rusting?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Using materials
Question
- A. The corrosion of iron
- B. The corrosion of copper
- C. The corrosion of aluminum
- D. The corrosion of steel
Answer
The correct option is The corrosion of iron. This answer is correct because it matches the approved learning objective to describe rusting as corrosion of iron. (Chemistry only) in the subtopic Corrosion and its prevention.
Explanation
The correct option is The corrosion of iron. The corrosion of iron is correct because it directly supports the approved learning objective to describe rusting as corrosion of iron. (Chemistry only). This belongs to the subtopic Corrosion and its prevention within Using materials, 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 Corrosion and its prevention.
Common mistake
Misunderstanding Rusting
Students often describe rusting as the corrosion of all metals, not just iron.
Emphasize that rusting specifically refers to the corrosion of iron.
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