ADEQ Water Treatment Grade 1 PRACTICE Exam
2025-2026 With Complete Questions and Correct
Answers | Graded A+ | Verified Answers And
Brand New
Hypochlorinators can become clogged with calcium carbonate. This
material can be removed by pumping a dilute solution of
________________ through the pump, hoses, and diffuser. - answer--
HCl - Hydrochloric Acid
Chlorine gas can kill a person after just a few breaths at concentrations
as low as _____________. - answer--0.1%
What is the purpose of packing in a pump? - answer--Control water
leakage along the pump's shaft
What is motor horsepower? - answer--The horsepower equivalent to
the watts of electric power supplied to a motor
A shaft transmits _________________ from the motor to the impeller. -
answer--Torque
,To prevent frosting, what is the maximum withdrawal rate for a 1-ton
chlorine container with a backpressure of 35 psi at room temperature? -
answer--400 lbs/day
What is brake horsepower? - answer--The power supplied to a pump by
a motor
What is the primary reason filters are difficult to clean? - answer--Sticky
floc adsorbs to the media
What is water horsepower? - answer--The portion of the power
delivered to a pump that is actually used to lift water
Chlorine scrubbers are designed to neutralize up to ____________lbs of
chlorine. - answer--2,000 lbs
There are many causes for bearing failure, what is the most common
reason? - answer--Poor lubrication practices
What metal will be the anode from the following list because it is most
active?
A) Tin
B) Brass
,C) Mild Steel
D) Copper - answer--C) Mild Steel
What kind of water is a poor conductor of electricity? - answer--
Deionized water
Destruction of pathogenic organisms by chlorine is directly related to
____________. - answer--Chlorine concentration and contact time
The valves on chlorine cylinders and ton containers must comply with
standards set by? - answer--Chlorine Institute
Surface wash systems for filters agitate the top ______________ inches
of media. - answer--2 inches
What disinfection treatment process requires a monitoring procedure,
other than residual monitoring, to determine its efficiency? - answer--
Ultraviolet
As water flows through the volute, the pressure head
___________________ and the velocity head
_____________________. - answer--Increases, decreases
, A pressure-differential meter is a flow-measuring device that creates
and measures a difference in pressure ________________________ to
the rate of flow. - answer--Proportional
The following procedure is safe for changing out chlorine cylinders or 1-
ton containers:
A) After removing the brass outlet cap, clean the valve and threads with
a wire brush
B) Always use a new washer
C) Always have a personal protective respirator nearby
D) All of the above - answer--D - All of the above
What is the most difficult and expensive physical measurement taken in
a water plant? - answer--Water Flow
If a treatment plant softens water, where should samples be collected
to determine if the desired result of softening has been achieved? -
answer--Immediately after softening and before the clear well
Coliform bacteria will produce gas in lactose or lauryl tryptose broth at
35.5C within ______________ hours. - answer--24-48 Hours
2025-2026 With Complete Questions and Correct
Answers | Graded A+ | Verified Answers And
Brand New
Hypochlorinators can become clogged with calcium carbonate. This
material can be removed by pumping a dilute solution of
________________ through the pump, hoses, and diffuser. - answer--
HCl - Hydrochloric Acid
Chlorine gas can kill a person after just a few breaths at concentrations
as low as _____________. - answer--0.1%
What is the purpose of packing in a pump? - answer--Control water
leakage along the pump's shaft
What is motor horsepower? - answer--The horsepower equivalent to
the watts of electric power supplied to a motor
A shaft transmits _________________ from the motor to the impeller. -
answer--Torque
,To prevent frosting, what is the maximum withdrawal rate for a 1-ton
chlorine container with a backpressure of 35 psi at room temperature? -
answer--400 lbs/day
What is brake horsepower? - answer--The power supplied to a pump by
a motor
What is the primary reason filters are difficult to clean? - answer--Sticky
floc adsorbs to the media
What is water horsepower? - answer--The portion of the power
delivered to a pump that is actually used to lift water
Chlorine scrubbers are designed to neutralize up to ____________lbs of
chlorine. - answer--2,000 lbs
There are many causes for bearing failure, what is the most common
reason? - answer--Poor lubrication practices
What metal will be the anode from the following list because it is most
active?
A) Tin
B) Brass
,C) Mild Steel
D) Copper - answer--C) Mild Steel
What kind of water is a poor conductor of electricity? - answer--
Deionized water
Destruction of pathogenic organisms by chlorine is directly related to
____________. - answer--Chlorine concentration and contact time
The valves on chlorine cylinders and ton containers must comply with
standards set by? - answer--Chlorine Institute
Surface wash systems for filters agitate the top ______________ inches
of media. - answer--2 inches
What disinfection treatment process requires a monitoring procedure,
other than residual monitoring, to determine its efficiency? - answer--
Ultraviolet
As water flows through the volute, the pressure head
___________________ and the velocity head
_____________________. - answer--Increases, decreases
, A pressure-differential meter is a flow-measuring device that creates
and measures a difference in pressure ________________________ to
the rate of flow. - answer--Proportional
The following procedure is safe for changing out chlorine cylinders or 1-
ton containers:
A) After removing the brass outlet cap, clean the valve and threads with
a wire brush
B) Always use a new washer
C) Always have a personal protective respirator nearby
D) All of the above - answer--D - All of the above
What is the most difficult and expensive physical measurement taken in
a water plant? - answer--Water Flow
If a treatment plant softens water, where should samples be collected
to determine if the desired result of softening has been achieved? -
answer--Immediately after softening and before the clear well
Coliform bacteria will produce gas in lactose or lauryl tryptose broth at
35.5C within ______________ hours. - answer--24-48 Hours
