API-571 Metal Practice Questions
The free API-571: Corrosion and Materials questions that deal with metal, with answers and explanations. The full bank and the timed practice test cover every topic the exam asks about.
Question #6
A metal shows signs of brownish surface and flaking; what type of corrosion is indicated?
Correct answer: B
Explanation
Rusting is characterized by reddish-brown flakes due to moisture and oxidation of iron or steel.
Question #10
A plant observes unusual appearances in metal surfaces post cleaning; what might this indicate?
Correct answer: D
Explanation
An unusual appearance often indicates that cleaning chemicals have attacked the metal, leading to potential corrosion or material degradation.
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