AMPP CIP Level 1 – Basic Coating Inspector
Theory Study Guide: 200 Practice Questions
with Answers & Explanations.
1. What is corrosion?
A) Mechanical wear of metal due to friction
B) Deterioration of a metal due to an electrochemical reaction with its environment
C) Thermal expansion of metal under high heat
D) Magnetic degradation of metal ions
Answer: B
Explanation: Corrosion is an electrochemical process where metal atoms lose electrons
(oxidation) and return to a more stable compound form. It requires an anode, cathode,
electrolyte, and metallic pathway.
2. What are the four components required for a corrosion cell?
A) Anode, cathode, resistor, and insulator
B) Anode, cathode, electrolyte, and metallic pathway
C) Cathode, electrolyte, insulator, and ground
D) Anode, resistor, metallic pathway, and ground
Answer: B
Explanation: The anode (oxidation site), cathode (reduction site), electrolyte (ionic
conductor), and metallic pathway (electron conductor) must all be present for corrosion to
occur.
,3. What is an anode?
A) The electrode where reduction occurs
B) The electrode where oxidation occurs and metal dissolves
C) The electrode that accepts electrons
D) The electrode that remains completely inert
Answer: B
Explanation: The anode is the more active (less noble) site where metal loses electrons and
dissolves into the electrolyte as ions.
4. What is a cathode?
A) The electrode where oxidation occurs
B) The electrode where metal dissolves
C) The electrode where reduction occurs and electrons are accepted
D) The electrode that releases metal ions
Answer: C
Explanation: At the cathode, electrons are consumed in reduction reactions (e.g., oxygen
and water combine to form hydroxyl ions). The cathode does not deteriorate.
5. What is an electrolyte?
A) A solid metallic conductor
B) A medium that carries ionic current between the anode and cathode
C) An insulating barrier that stops electron flow
D) A gas that prevents oxidation
,Answer: B
Explanation: An electrolyte (e.g., water, moisture, salt solution) contains ions and
completes the electrical circuit by allowing ion migration between electrodes.
6. What is a metallic pathway?
A) The path through the electrolyte
B) The conductive path for electrons to flow from anode to cathode
C) The insulation layer on the metal surface
D) The path for ion flow in the solution
Answer: B
Explanation: The metallic pathway (the metal structure itself or a wire) allows electrons
released at the anode to travel to the cathode.
7. What is the direction of electron flow in a corrosion cell?
A) From cathode to anode through the metallic path
B) From anode to cathode through the metallic path
C) From anode to cathode through the electrolyte
D) From cathode to anode through the electrolyte
Answer: B
Explanation: Electrons are generated at the anode via oxidation and flow through the
metallic connection to the cathode, where they are consumed.
, 8. What is the galvanic series?
A) A ranking of metals by their melting point
B) A listing of metals in order of reactivity from most active to most noble
C) A list of metals by their density
D) A series showing metal tensile strength
Answer: B
Explanation: The galvanic series ranks metals by their electrochemical potential in
seawater. More active (anodic) metals corrode preferentially when coupled with more
noble (cathodic) metals.
9. What is the general rule of the galvanic series?
A) The more noble metal will corrode preferentially
B) Both metals will corrode equally
C) The less noble metal will corrode preferentially when connected to a more noble
metal
D) No corrosion occurs when two metals are connected
Answer: C
Explanation: The more active (less noble) metal becomes the anode and sacrifices itself to
protect the more noble metal—this is the basis for sacrificial anodes.
10. What is general corrosion?
A) Corrosion in small concentrated pits
B) Uniform loss of material over an entire exposed surface
C) Corrosion under gaskets
D) Stress-related cracking
Theory Study Guide: 200 Practice Questions
with Answers & Explanations.
1. What is corrosion?
A) Mechanical wear of metal due to friction
B) Deterioration of a metal due to an electrochemical reaction with its environment
C) Thermal expansion of metal under high heat
D) Magnetic degradation of metal ions
Answer: B
Explanation: Corrosion is an electrochemical process where metal atoms lose electrons
(oxidation) and return to a more stable compound form. It requires an anode, cathode,
electrolyte, and metallic pathway.
2. What are the four components required for a corrosion cell?
A) Anode, cathode, resistor, and insulator
B) Anode, cathode, electrolyte, and metallic pathway
C) Cathode, electrolyte, insulator, and ground
D) Anode, resistor, metallic pathway, and ground
Answer: B
Explanation: The anode (oxidation site), cathode (reduction site), electrolyte (ionic
conductor), and metallic pathway (electron conductor) must all be present for corrosion to
occur.
,3. What is an anode?
A) The electrode where reduction occurs
B) The electrode where oxidation occurs and metal dissolves
C) The electrode that accepts electrons
D) The electrode that remains completely inert
Answer: B
Explanation: The anode is the more active (less noble) site where metal loses electrons and
dissolves into the electrolyte as ions.
4. What is a cathode?
A) The electrode where oxidation occurs
B) The electrode where metal dissolves
C) The electrode where reduction occurs and electrons are accepted
D) The electrode that releases metal ions
Answer: C
Explanation: At the cathode, electrons are consumed in reduction reactions (e.g., oxygen
and water combine to form hydroxyl ions). The cathode does not deteriorate.
5. What is an electrolyte?
A) A solid metallic conductor
B) A medium that carries ionic current between the anode and cathode
C) An insulating barrier that stops electron flow
D) A gas that prevents oxidation
,Answer: B
Explanation: An electrolyte (e.g., water, moisture, salt solution) contains ions and
completes the electrical circuit by allowing ion migration between electrodes.
6. What is a metallic pathway?
A) The path through the electrolyte
B) The conductive path for electrons to flow from anode to cathode
C) The insulation layer on the metal surface
D) The path for ion flow in the solution
Answer: B
Explanation: The metallic pathway (the metal structure itself or a wire) allows electrons
released at the anode to travel to the cathode.
7. What is the direction of electron flow in a corrosion cell?
A) From cathode to anode through the metallic path
B) From anode to cathode through the metallic path
C) From anode to cathode through the electrolyte
D) From cathode to anode through the electrolyte
Answer: B
Explanation: Electrons are generated at the anode via oxidation and flow through the
metallic connection to the cathode, where they are consumed.
, 8. What is the galvanic series?
A) A ranking of metals by their melting point
B) A listing of metals in order of reactivity from most active to most noble
C) A list of metals by their density
D) A series showing metal tensile strength
Answer: B
Explanation: The galvanic series ranks metals by their electrochemical potential in
seawater. More active (anodic) metals corrode preferentially when coupled with more
noble (cathodic) metals.
9. What is the general rule of the galvanic series?
A) The more noble metal will corrode preferentially
B) Both metals will corrode equally
C) The less noble metal will corrode preferentially when connected to a more noble
metal
D) No corrosion occurs when two metals are connected
Answer: C
Explanation: The more active (less noble) metal becomes the anode and sacrifices itself to
protect the more noble metal—this is the basis for sacrificial anodes.
10. What is general corrosion?
A) Corrosion in small concentrated pits
B) Uniform loss of material over an entire exposed surface
C) Corrosion under gaskets
D) Stress-related cracking
