Question detail
Which of the following statements is true about aluminium's resistance to 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 does not corrode at all.
- B. It corrodes quickly in water.
- C. The oxide layer prevents further corrosion.
- D. It requires constant maintenance to prevent corrosion.
Answer
The oxide layer prevents further corrosion.
Explanation
The oxide layer formed on aluminium acts as a barrier, preventing moisture and air from reaching the underlying metal.
Common mistake
Aluminium Corrosion Resistance
Students often think that aluminium does not corrode at all.
Explain that aluminium does corrode, but the oxide coating that forms protects it from further corrosion.
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