Inspector Theory 2025/2026 Exam
Questions with 100% Correct Answers |
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What are Volatile Organic Compounds (VOCs)? - 🧠ANSWER ✔✔Chemicals that
easily evaporate at room temperature.
What are solvents? - 🧠ANSWER ✔✔Substances that dissolve other substances to
form a solution.
Why can solvents in coatings be harmful? - 🧠ANSWER ✔✔Because they can
release VOCs into the air.
What are some examples of solvents used in coatings? - 🧠ANSWER ✔✔Acetone,
toluene, xylene, and ethyl acetate.
What are three commonly used galvanic anodes for carbon steel? - 🧠ANSWER
✔✔Zinc, Aluminum, and Magnesium
,What is the effect of temperature on corrosion rate? - 🧠ANSWER ✔✔Decrease in
temperature decreases corrosion rate.
What is an electrolyte? - 🧠ANSWER ✔✔A medium that carries ionic current.
What is sacrificial coating? - 🧠ANSWER ✔✔A type of coating that becomes the
anode of an electrochemical cell.
What is the role of binders in coating? - 🧠ANSWER ✔✔Binders form a stable film
that retains its properties.
What is a barrier coating? - 🧠ANSWER ✔✔A coating that interrupts the
electrolyte of an electrochemical cell.
What are two environments most susceptible to corrosion? - 🧠ANSWER
✔✔Marine Environment, Chemical with High Humidity Environment
What is the direction of electron flow in an oxidation reaction? - 🧠ANSWER
✔✔From the anode to the cathode through the metallic path.
What is the role of binders? - 🧠ANSWER ✔✔Binders bonds pigments together and
adhere to surface.
,What are solvents? - 🧠ANSWER ✔✔Solvents are liquids that dissolve the solid
resins.
What is the purpose of pigments? - 🧠ANSWER ✔✔Pigments hide the substrates,
provide decorative color, and enhance desired properties.
What are additives? - 🧠ANSWER ✔✔Additives are special purpose ingredients
used to enhance the performance.
What are vehicles? - 🧠ANSWER ✔✔Vehicles are the liquid portions of the
coating.
What is corrosion? - 🧠ANSWER ✔✔Deterioration of metal or alloy due to
electrochemical reaction.
What is passivation? - 🧠ANSWER ✔✔Layer of oxides on metal surface for
corrosion protection.
Give an example of a metal that undergoes passivation. - 🧠ANSWER ✔✔Stainless
steel
What is an anode? - 🧠ANSWER ✔✔The electrode where oxidation occurs.
What is a cathode? - 🧠ANSWER ✔✔The electrode where reduction occurs.
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, What is a metallic pathway? - 🧠ANSWER ✔✔The conductive path for electrons to
flow.
What are electrolytes? - 🧠ANSWER ✔✔Substances that conduct electricity when
dissolved in water.
What is the function of an electrolyte in corrosion? - 🧠ANSWER ✔✔Allows
passage of ions in corrosion cell.
What is the function of a metallic pathway in corrosion? - 🧠ANSWER ✔✔Allows
flow of electrons in corrosion cell.
What is the galvanic series? - 🧠ANSWER ✔✔Listing of metals in order of
reactivity.
What is the general rule of the galvanic series? - 🧠ANSWER ✔✔Less noble metal
connected to a more noble metal will corrode preferentially.
What is localized corrosion? - 🧠ANSWER ✔✔Corrosion that occurs in specific
areas.
What are the types of localized corrosion? - 🧠ANSWER ✔✔Pitting and crevice
corrosion.