
9189PH2HWPPT8
Authored by William Heron
Science
12th Grade

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40 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is backflow risk in plumbing?
The flow of water in the intended direction
The reverse flow of water into the clean water supply
The increase of water pressure in pipes
The decrease of water temperature in pipes.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Backflow prevention methods are essential to ensure the safety of water supply. Which of the following is a common method used to prevent backflow?
Installing a check valve
Increasing water pressure
Reducing water temperature
Using larger pipes
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is backflow in plumbing?
The flowing of water in the wrong direction due to loss of system pressure.
The increase of water pressure in the system.
The regular flow of water in the correct direction.
The heating of water in the system.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Back siphonage can occur when the pressure at the supply suddenly drops, causing a vacuum that sucks the water backwards. To prevent this, regulations outline the use of either a physical air gap or a ________.
chemical solution
mechanical device
electrical pump
manual valve
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the description of Fluid category 1?
Wholesome water supplied by a water undertaker
Water whose aesthetic quality is impaired
Fluid that represents a slight health hazard
Fluid that represents a significant health hazard.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fill in the blank: Any water that is not wholesome, potable drinking water is a ______ hazard.
potential
slight
significant
serious
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which appliance or system is associated with the potential contamination of human waste?
Kitchen sink
WC
Bidet (over rim type)
Combi boilers
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