Question detail
Why is rusting described as a specific example of corrosion?
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. It is the corrosion of iron when it reacts with oxygen and water
- B. It is the melting of iron when it is heated
- C. It is the coating of iron with paint
- D. It is the formation of an alloy from iron and carbon
Answer
The correct option is It is the corrosion of iron when it reacts with oxygen and water.
Explanation
The correct option is "It is the corrosion of iron when it reacts with oxygen and water" because it supports the approved learning objective: Define corrosion as the destruction of materials by chemical reactions with substances in the environment. (Chemistry only). The other options are incorrect or weaker because they are vague, use the wrong Chemistry context, or do not clearly explain the answer for Corrosion and its prevention.
Common mistake
Misunderstanding Corrosion
Students often define corrosion only as rusting, failing to recognize it as a broader process affecting various materials.
Emphasize that corrosion is the destruction of materials by chemical reactions with substances in the environment, not limited to just iron or rusting.
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