Corrosion quiz
Authored by Param Parekh
Chemistry
University
Used 7+ times
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11 questions
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1.
OPEN ENDED QUESTION
30 sec • Ungraded
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2.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
____ is a localized form of corrosion by which cavities or holes are produced in the material.
Soil corrosion
Pitting
Waterline
none of the above
3.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Which of the following is not a cause for Corrosion ?
Exposure to salt and other substances in environment
Poor surface coating
Contact with corroded metals
High temperature and pressure
4.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Which of the following soil components do not affect soil corrosion :
pH of soil
Presence of bacteria
sulphides and carbonates
vegetation
5.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Correct order of stages in Hot dip galvanization process :
Inspection > Galvanizing > Surface preparation
Galvanizing > Surface preparation > Inspection
Surface preparation > Galvanizing > Inspection
Inspection > Surface preparation > Galvanixing
6.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Which of the following is not an advantage of galvanizing ?
Makes the surface abrasion-resistant
Improves tensile strength of steel
Creates barrier between steel and environment
Eco-friendly process
7.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
How does Galvanic corrosion occur ? Which metal is typically affected by corrosion process in a Galvanic couple ?
Due to potential difference between two different metals ; zinc - anode, platinum - cathode
Due to potential difference between two different metals ; zinc - anode, copper - cathode
Due to variation in oxygen concentration across the metal surface ; zinc - anode, platinum - cathode
Due to presence of extraneous impurities (like sand, dust, scales etc) on the surface of metal ; zinc - anode, platinum - cathode
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