AMPP Coating Inspector
Program
2026/2027 Academic Year
Practice Questions & Correct
Answers Plus Rationales
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✓ Practice Questions & Correct Answers 2026/27
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Section I: Corrosion Fundamentals (Questions 1-10)
1. What is corrosion?
a) The process of applying a protective coating to a metal
surface
b) The deterioration of a metal or alloy resulting from an
electrochemical reaction with its environment
c) The removal of mill scale from steel surfaces
d) The process of measuring dry film thickness
Correct Answer: b — Corrosion is defined as the deterioration
of a metal or alloy that results from an electrochemical reaction
with its environment .
2. What four elements must be present for corrosion to
occur?
a) Anode, cathode, metallic pathway, and electrolyte
b) Primer, intermediate coat, finish coat, and topcoat
c) Oxygen, hydrogen, water, and salt
d) Steel, zinc, aluminum, and copper
Correct Answer: a — The four elements required for an
electrochemical corrosion cell are: Anode, Cathode, Metallic
Pathway, and Electrolyte .
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3. What is the anode in a corrosion cell?
a) The area of the metal surface that does not corrode
b) The area of the metal surface that corrodes, where metal
oxidizes and loses mass
c) The conductive medium that carries ions
d) The protective oxide layer on a metal surface
Correct Answer: b — The anode is the area of the metal
surface that corrodes. The metal oxidizes (gains oxygen),
causing it to lose mass and dissolve into the electrolyte .
4. What occurs at the cathode in a corrosion cell?
a) Oxidation and loss of electrons
b) Reduction, where the metal gains electrons
c) Dissolution of metal ions
d) Formation of rust
Correct Answer: b — Reduction is a chemical reaction that
occurs at the cathode that involves the metal gaining electrons .
5. What is the function of the electrolyte in a corrosion cell?
a) To connect the anode to the cathode for electron flow
b) To allow the passage of ions from the anode to the cathode
c) To prevent corrosion from occurring
d) To oxidize the metal surface
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Correct Answer: b — The electrolyte is the conductive medium
(any solution, like water) in which ions are carried from the
anode to the cathode .
6. How does high temperature typically affect the corrosion
rate?
a) Corrosion rate decreases
b) Corrosion rate increases
c) Corrosion rate remains unchanged
d) Corrosion completely stops
Correct Answer: b — High temperature increases the corrosion
rate, while low temperature decreases the corrosion rate .
7. What is a barrier coating?
a) A coating that contains zinc that corrodes instead of the
substrate
b) A coating that provides a chemical and physical barrier
between the metal surface and the environment
c) A coating that reacts with moisture to form a non-reactive
surface film
d) A coating that passivates the metal surface
Correct Answer: b — A barrier coating protects the
substrate/metal by providing a chemical and physical barrier