
6036SCPPT1Q4

Quiz
•
Chemistry
•
12th Grade
•
Hard

William Heron
FREE Resource
11 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is dezincification in plumbing materials?
Leaching of aluminum from brass components
Leaching of iron from steel components
Leaching of zinc from brass components
Leaching of copper from brass components
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the cause of electrolytic corrosion in a plumbing system?
Exposure to UV light
High flow rate of water or gas
Presence of flux in the pipes
Contact between different metals in the presence of an electrolyte
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What metal is used as a sacrificial anode in a hot water cylinder to prevent electrolytic corrosion?
Copper
Aluminum
Magnesium
Iron
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of corrosion can occur on the inside of a copper tube if flux is not cleaned off during commissioning?
Enamelling corrosion
Blue water corrosion
Erosion corrosion
Pitting corrosion
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What can increase erosion in hot and cold water pipework?
Low flow rate
High flow rate
Presence of oxygen
Exposure to sunlight
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What can cause blue water corrosion in a new plumbing system?
Exposure to UV light
Presence of flux in the pipes
High flow rate of water
Standing dormant for a period while filled with water
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What can degrade plastics in a plumbing system?
Light, chemicals, and standing dormant
Heat, UV, oxygen, light and chemicals
Heat, oxygen, and light
UV, oxygen, and chemicals
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