Question detail
Which of the following is an example of barrier protection?
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. Zinc coating on iron
- B. Galvanizing iron with zinc
- C. Painting iron surfaces
- D. Using aluminum to protect iron
Answer
Painting iron surfaces
Explanation
Painting iron surfaces is an example of barrier protection as it prevents moisture and air from reaching the iron, thus reducing the risk of corrosion.
Common mistake
Confusing Protection Methods
Students often confuse barrier protection with sacrificial protection, thinking they are the same.
Remember that barrier protection involves covering the metal with a protective layer (like paint or grease), while sacrificial protection involves using a more reactive metal that corrodes instead of the iron.
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