Question detail
Which of the following metals is commonly used for sacrificial protection of iron?
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. Copper
- B. Zinc
- C. Aluminium
- D. Lead
Answer
Zinc
Explanation
Zinc is often used for sacrificial protection because it is more reactive than iron and will corrode first, protecting the iron.
Common mistake
Misunderstanding Sacrificial Protection
Students often confuse sacrificial protection with barrier protection, thinking that both involve covering iron to prevent corrosion.
Clarify that sacrificial protection involves using a more reactive metal that corrodes instead of iron, while barrier protection involves coating iron with materials like paint or grease.
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