Quiz  /  Corrosion Gate & PSU MCQ Questions With Answers

  • 1. 
    Is this an example of corrosion?

  • Yes
  • No

  • 2. 
    Neutralizer function is to neutralize acid to prevent corrosion from happening.

  • True
  • False

  • 3. 
    Finish the equation: Aluminium + _________ --> Aluminium oxide

  • Oxide
  • Oxygen
  • Oxygen + water
  • Water

  • 4. 
    Coating of Zn, Al and Cd on steel are _________ , because their electrode potentials are lower

  • Cathodic
  • Anodic
  • Not affecting
  • Expensive

  • 5. 
    What makes molecule bond in water stable

  • glue
  • hydrogen bond
  • tape
  • oxygen bond

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

  • Au
  • Fe
  • Pt
  • Ag

  • 7. 
    The following metals would protect iron by electrons flowing to the iron is ... .

  • Silver
  • Gold
  • Copper
  • Magnesium

  • 8. 
    What is corrosion?

  • The release of oxygen
  • Breakdown of a metal

  • 9. 
    Two elemants joined together is called an __________

  • inget
  • element
  • alloy
  • gem

  • 10. 
    Name the two general classifications of corrosion

  • Direct chemical attack and Electrochemical attack
  • Fretting corrosion and Galvanic attack.

  • 11. 
    Iron rust in the presence of:

  • Oxygen
  • Vacuum
  • Moisture
  • Moisture and Oxygen

  • 12. 
    To protect iron against corrosion, the most durable metal plating on it, is:

  • Zinc plating
  • Nickel plating

  • 13. 
    What is the chemical nature of rust?

  • iron (II) oxide
  • hydrated iron (II) oxide
  • iron (III) oxide
  • hydrated iron(III) oxide

  • 14. 
    Rust is,....

  • hydrated iron
  • iron oxide
  • copper carbonate
  • Hydrated iron oxide

  • 15. 
    Corrosion Inhibitor: A substance, which slows down the corrosion process when, added to an environment in small concentrations.Please confirm above statement is TRUE or FALSE

  • True
  • False

  • 16. 
    What conditions are required for rusting?

  • water only
  • oxygen only
  • water and oxygen

  • 17. 
    Two types of Noble metals

  • gold and platinum
  • iron and copper
  • stainless steel and aluminum
  • tin and brass

  • 18. 
    Which of the following statement is TRUE regarding Anodic and Cathodic reactions?

  • Both reactions take place simultaneously
  • Both reactions take place one after another
  • Both reactions must occur at a different rate
  • Both reactions must occur at a fast rate

  • 19. 
    Is this an example of oxidation?

  • Yes
  • No

  • 20. 
    Rusting can be prevented by

  • Alloying
  • Tinning
  • Galvanizing
  • All of above
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