1
Water Distribution Grade 1 Certification
ADEQ Practice Exam: 100% Verified
Questions & Answers: Latest Updated
What is the general definition of an ion? An _________ with a positive or
negative charge - (ANSWER)Atom
A continuous positive pressure in a distribution system is essential for preventing
what event? - (ANSWER)Backflow Event
_____________ water pressure must be maintained to ensure adequate
customer service during peak flow periods. However, minimum positive pressure
must be maintained in mains to protect against backflow or backsiphonage from
cross-connections. - (ANSWER)Minimum
Name the most common CAUSE for public water supply contamination.
_________________ or cross-connection - (ANSWER)Backflow
What does a backsiphonage condition usually cause? __________ pressure or
negative pressure on the service or supply side. - (ANSWER)Reduced
What does a double check valve backflow assembly provide effective protection
from? Both backpressure and backsiphonage of ____________. -
(ANSWER)Pollution
, 2
What is equipment that utilizes water for cooling, lubrication, washing or as a
solvent always susceptible to? - (ANSWER)Cross-Connection
What is the difference between a reduced pressure principle backflow device and
a double check backflow device? The RP has a ______________. -
(ANSWER)Relief Valve
What is the maximum time period between having a backflow device tested by a
certified backflow tester? ______________ year. - (ANSWER)1
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. - (ANSWER)PWS
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? - (ANSWER)Bypass
Valve
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 to the lungs. At
this point, the victim must attempt to do two things: 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. -
(ANSWER)Coughing
, 3
Chlorine gas causes suffocation, constriction of the chest, tightness in the throat,
and edema of the ______________. - (ANSWER)Lungs
_______________ available chlorine is very effective in killing bacteria. -
(ANSWER)Free
How should an operator store an empty chlorine cylinder? ____________, tagged
as empty. - (ANSWER)Upright
If a chlorine leak occurs, where will chlorine gas accumulate? Near the
____________ of the tank. - (ANSWER)Bottom
What effect does chlorine gas have on the sense of smell? It produces olfactory
_______________. - (ANSWER)Fatigue
What is the primary safety concern when using chlorine gas as opposed to
calcium hypochlorite or sodium hypochlorite? The potential for a _____________
leak. - (ANSWER)Gas
What may occur due to chronic exposure to low concentrations of chlorine gas?
Chronic exposure may cause corrosion of the _____________. - (ANSWER)Teeth
What is the process called that changes water vapor to tiny droplets or ice
crystals? - (ANSWER)Condensation
Water Distribution Grade 1 Certification
ADEQ Practice Exam: 100% Verified
Questions & Answers: Latest Updated
What is the general definition of an ion? An _________ with a positive or
negative charge - (ANSWER)Atom
A continuous positive pressure in a distribution system is essential for preventing
what event? - (ANSWER)Backflow Event
_____________ water pressure must be maintained to ensure adequate
customer service during peak flow periods. However, minimum positive pressure
must be maintained in mains to protect against backflow or backsiphonage from
cross-connections. - (ANSWER)Minimum
Name the most common CAUSE for public water supply contamination.
_________________ or cross-connection - (ANSWER)Backflow
What does a backsiphonage condition usually cause? __________ pressure or
negative pressure on the service or supply side. - (ANSWER)Reduced
What does a double check valve backflow assembly provide effective protection
from? Both backpressure and backsiphonage of ____________. -
(ANSWER)Pollution
, 2
What is equipment that utilizes water for cooling, lubrication, washing or as a
solvent always susceptible to? - (ANSWER)Cross-Connection
What is the difference between a reduced pressure principle backflow device and
a double check backflow device? The RP has a ______________. -
(ANSWER)Relief Valve
What is the maximum time period between having a backflow device tested by a
certified backflow tester? ______________ year. - (ANSWER)1
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. - (ANSWER)PWS
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? - (ANSWER)Bypass
Valve
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 to the lungs. At
this point, the victim must attempt to do two things: 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. -
(ANSWER)Coughing
, 3
Chlorine gas causes suffocation, constriction of the chest, tightness in the throat,
and edema of the ______________. - (ANSWER)Lungs
_______________ available chlorine is very effective in killing bacteria. -
(ANSWER)Free
How should an operator store an empty chlorine cylinder? ____________, tagged
as empty. - (ANSWER)Upright
If a chlorine leak occurs, where will chlorine gas accumulate? Near the
____________ of the tank. - (ANSWER)Bottom
What effect does chlorine gas have on the sense of smell? It produces olfactory
_______________. - (ANSWER)Fatigue
What is the primary safety concern when using chlorine gas as opposed to
calcium hypochlorite or sodium hypochlorite? The potential for a _____________
leak. - (ANSWER)Gas
What may occur due to chronic exposure to low concentrations of chlorine gas?
Chronic exposure may cause corrosion of the _____________. - (ANSWER)Teeth
What is the process called that changes water vapor to tiny droplets or ice
crystals? - (ANSWER)Condensation
