Corrosion Questions: Chemistry Quiz!

11 Questions | Total Attempts: 4495

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Corrosion Questions: Chemistry Quiz!

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Questions and Answers
  • 1. 
    Corrosion is a chemical reaction that involves:
    • A. 

      The inside of the object changing from an element to a compound

    • B. 

      The surface of the object changing from an element to a compound

    • C. 

      Nothing happens

    • D. 

      The surface of the object changes from one element into another element.

  • 2. 
    Rusting is a special term, given to the corrosion of which metal?
    • A. 

      Zinc

    • B. 

      Copper

    • C. 

      Nickel

    • D. 

      Iron

  • 3. 
    What conditions are required for rusting to take place?
    • A. 

      Water only

    • B. 

      Oxygen only

    • C. 

      Water and oxygen

    • D. 

      Water and carbon dioxide

  • 4. 
    Ferroxyl indicator changes color in the presence of Fe2+ ions.
    • A. 

      Stays yellow

    • B. 

      Yellow --> Pink

    • C. 

      Yellow --> Blue

    • D. 

      Pink --> Yellow

  • 5. 
    Corrosion is an example of?
  • 6. 
    What effect does salt have on the rate of corrosion?
    • A. 

      No effect

    • B. 

      Speeds up corrosion

    • C. 

      Slows down corrosion

  • 7. 
    Which of the following is not an example of physical protection?
    • A. 

      Greasing

    • B. 

      Painting

    • C. 

      Attaching the metal to the negative terminal of a battery

    • D. 

      Electroplating

    • E. 

      Galvanising

  • 8. 
    Which of the following metals would protect iron by electrons flowing to the iron?
    • A. 

      Magnesium

    • B. 

      Silver

    • C. 

      Tin

    • D. 

      Copper

  • 9. 
    When objects (gates) are galvanized, what metal is used to protect the iron.
    • A. 

      Aluminium

    • B. 

      Copper

    • C. 

      Nickel

    • D. 

      Zinc

  • 10. 
    What type of protection is galvanizing?
    • A. 

      Physical protection

    • B. 

      Sacrificial protection

    • C. 

      Physical and sacrificial protection

    • D. 

      None of the above.

  • 11. 
    Explain the effect of scratching a tin-plated (iron) object has on the rate of corrosion.
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