Ultimate Corrosion Quiz: Trivia!

24 Questions | Total Attempts: 203

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Ultimate Corrosion Quiz: Trivia!

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Questions and Answers
  • 1. 
    Which of the following can be used to prevent rusting?
    • A. 

      Paint

    • B. 

      Zinc

    • C. 

      None of the above

    • D. 

      All of the above

  • 2. 
    Iron can be corroded easily.
    • A. 

      True

    • B. 

      False

  • 3. 
    Corrosion is a:
    • A. 

      Chemical change

    • B. 

      Disaster

    • C. 

      Physical change

    • D. 

      None of the above

  • 4. 
    Can corrosion be helpful?
    • A. 

      True

    • B. 

      False

  • 5. 
    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.

  • 6. 
    Rusting is a special term, given to the corrosion of which metal.
    • A. 

      Zinc

    • B. 

      Copper

    • C. 

      Nickel

    • D. 

      Iron

  • 7. 
    What conditions are required for rusting to take place?
    • A. 

      Water only

    • B. 

      Oxygen only

    • C. 

      Water and oxygen

    • D. 

      Water and carbon dioxide

  • 8. 
    Describe why Ecorr shifts to more negative when a cathodic inhibitor is used:
    • A. 

      Because only anodic reaction is controlled the reactions.

    • B. 

      Because only cathodic reaction is controlled the reactions.

  • 9. 
    Corrosion is an example of
  • 10. 
    What effect does salt have on the rate of corrosion?
    • A. 

      No effect

    • B. 

      Speeds up corrosion

    • C. 

      Slows down corrosion

  • 11. 
    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

  • 12. 
    Which of the following metals would protect iron by electrons flowing to the iron?
    • A. 

      Magnesium

    • B. 

      Silver

    • C. 

      Tin

    • D. 

      Copper

  • 13. 
    When objects (gates) are galvanized, what metal is used to protect the iron.
    • A. 

      Aluminium

    • B. 

      Copper

    • C. 

      Nickel

    • D. 

      Zinc

  • 14. 
    What type of protection is galvanizing?
    • A. 

      Physical protection

    • B. 

      Sacrificial protection

    • C. 

      Physical and sacrificial protection

    • D. 

      None of the above.

  • 15. 
    Rusting of iron is a typical example for
    • A. 

      Chemical corrosion

    • B. 

      Electrochemical corrosion

    • C. 

      Physical reaction

    • D. 

      None of these

  • 16. 
    The pitting factor of unity represents ____ corrosion.
    • A. 

      Uniform

    • B. 

      Galvanic

    • C. 

      Inter granular

    • D. 

      Fretting

  • 17. 
    Passivity in stainless steel is due to the formation of?
    • A. 

      Sulphide film

    • B. 

      Carbide film

    • C. 

      Oxide film

    • D. 

      Chloride film

  • 18. 
    An iron pipe carrying water is more anodic to copper. This is due to:
    • A. 

      Concentration cell

    • B. 

      Galvanic cell

    • C. 

      Electrolytic cell

    • D. 

      Leclanche cell

  • 19. 
    Which of the following metal can be used for cathodic protection of steel?
    • A. 

      Al

    • B. 

      Cu

    • C. 

      Ag

    • D. 

      Au

  • 20. 
    In zinc – aluminium galvanic couple, when exposed to acidic solutions.
    • A. 

      Zinc dissolves

    • B. 

      Aluminium dissolves

    • C. 

      Both dissolve

    • D. 

      None of these

  • 21. 
    Typical example for anodic metallic coating is:
    • A. 

      Zn on Steel

    • B. 

      Cu on Steel

    • C. 

      Au on steel

    • D. 

      All of these

  • 22. 
    Pourbaix diagram is a graphical plot of?
    • A. 

      E Vs pH

    • B. 

      E Vs Log i

    • C. 

      E Vs time

    • D. 

      Current Vs Potential

  • 23. 
    When a non-metallic material forms a crevice on the metallic surface it is known as?
    • A. 

      Pitting

    • B. 

      Gasket

    • C. 

      Uniform

    • D. 

      Fretting

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