WATER DISTRIBUTION GRADE 1 CERTIFICATION ADEQ PRACTICE EXAM| 100+ Q &
2025 UPDATE
1. What is the general definition of an ion? An with a positive or
negative charge correct answer > Atom
2. A continuous positive pressure in a distribution system is essential for preventing what event?
correct answer > Backflow Event
3. water pressure must be maintained to ensure adequate cus- tomer service during
peak flow periods. However, minimum positive pressure must be maintained in mains to protect against
backflow or backsiphonage from cross-connections. correct answer > Minimum
4. Name the most common CAUSE for public water supply contamination.
or cross-connection correct answer > Backflow
5. What does a backsiphonage condition usually cause? pressure or
negative pressure on the service or supply side. correct answer > Reduced
6. What does a double check valve backflow assembly provide effective pro- tection from? Both
backpressure and backsiphonage of .
correct answer > Pol- lution
7. What is equipment that utilizes water for cooling, lubrication, washing or as a solvent always susceptible
to? correct answer > Cross-Connection
8. What is the difference between a reduced pressure principle backflow device and a double check
backflow device? The RP has a .-
correct answer > Relief Valve
9. What is the maximum time period between having a backflow device tested by a certified backflow
tester? year. correct answer > 1
10. What is the regulatory definition of a cross-connection in a water supply? A physical connection
between a public water system and any source of water or other substance that may lead to contamination
of the water provided by the through backflow. correct answer > PWS
11. What is the name of a type of valve that reduces the differential pressure across a closed disk making
the main valve easier to open and close? correct answer > Bypass Valve
12. As soon as Cl2 gas enters the throat area, a victim will sense a sudden stricture in this area-Nature's
way of signaling to prevent passage of the gas
1/
, to the lungs. At this point, the victim must attempt to do two things correct answer > get out of the area of
the leak, proceeding upwind, and to take only very short breaths through the mouth. Normal breathing will
cause , which must be prevented if possible. correct answer > Coughing
13. Chlorine gas causes suffocation, constriction of the chest, tightness in the throat, and edema of the
Lungs
14. available chlorine is very effective in killing bacteria. correct answer > -
Free
2/
2025 UPDATE
1. What is the general definition of an ion? An with a positive or
negative charge correct answer > Atom
2. A continuous positive pressure in a distribution system is essential for preventing what event?
correct answer > Backflow Event
3. water pressure must be maintained to ensure adequate cus- tomer service during
peak flow periods. However, minimum positive pressure must be maintained in mains to protect against
backflow or backsiphonage from cross-connections. correct answer > Minimum
4. Name the most common CAUSE for public water supply contamination.
or cross-connection correct answer > Backflow
5. What does a backsiphonage condition usually cause? pressure or
negative pressure on the service or supply side. correct answer > Reduced
6. What does a double check valve backflow assembly provide effective pro- tection from? Both
backpressure and backsiphonage of .
correct answer > Pol- lution
7. What is equipment that utilizes water for cooling, lubrication, washing or as a solvent always susceptible
to? correct answer > Cross-Connection
8. What is the difference between a reduced pressure principle backflow device and a double check
backflow device? The RP has a .-
correct answer > Relief Valve
9. What is the maximum time period between having a backflow device tested by a certified backflow
tester? year. correct answer > 1
10. What is the regulatory definition of a cross-connection in a water supply? A physical connection
between a public water system and any source of water or other substance that may lead to contamination
of the water provided by the through backflow. correct answer > PWS
11. What is the name of a type of valve that reduces the differential pressure across a closed disk making
the main valve easier to open and close? correct answer > Bypass Valve
12. As soon as Cl2 gas enters the throat area, a victim will sense a sudden stricture in this area-Nature's
way of signaling to prevent passage of the gas
1/
, to the lungs. At this point, the victim must attempt to do two things correct answer > get out of the area of
the leak, proceeding upwind, and to take only very short breaths through the mouth. Normal breathing will
cause , which must be prevented if possible. correct answer > Coughing
13. Chlorine gas causes suffocation, constriction of the chest, tightness in the throat, and edema of the
Lungs
14. available chlorine is very effective in killing bacteria. correct answer > -
Free
2/
