Question detail
Which method is used to protect iron by using a more reactive metal?
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. Galvanizing
- B. Electroplating
- C. Sacrificial protection
- D. Barrier protection
Answer
Sacrificial protection
Explanation
Sacrificial protection involves using a more reactive metal that corrodes instead of the iron, thus protecting it from rusting.
Common mistake
Misinterpreting Rusting Results
Students often confuse the presence of rust with the absence of rusting conditions, failing to recognize that rusting requires both air and water.
To fix this, students should remember that rusting occurs only when both air and water are present, and they should analyze experimental results to identify these conditions.
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