POOL AND SPA OPERATOR FINAL EXAM | QUESTIONS AND
ANSWERS | VERIFIED ANSWERS | EXAM ALREADY GRADED A+ |
LATEST EXAM UPDATE
The percentage of hypoclorous acid formation is most influenced by: -
CORRECT ANSWER - pH
Pool painting is usually done: - CORRECT ANSWER - Before opening in the
spring
When a pool is chlorinated with gas chlorine, the operator must also use: -
CORRECT ANSWER - Soda Ash
The term "chlorine demand" refers to: - CORRECT ANSWER - The amount
of chlorine which will react with substances in the pool
Re-circulation pumps used in swimming pools are the type called: -
CORRECT ANSWER - Centrifugal pumps
Reversing the flow of water through the filters is called: - CORRECT
ANSWER - Backwash
"Slurry feed" or "body feed" refers to: - CORRECT ANSWER - Diatomite
added during a filter run
The term pH is determined by the concentration of: - CORRECT ANSWER -
Hydrogen ions
,Because carbonate ions combine with hydrogen ions, sodium carbonate will
cause pH to: - CORRECT ANSWER - Rise
When enough chlorine is added to cause complete oxidation of all organic
compounds, a sudden drop in residual chlorine may be noticed. The point at
which this occurs is called the: - CORRECT ANSWER - Break-point
"Residual chlorine" refers to: - CORRECT ANSWER - The amount left in the
water after oxidation of organic material
Which of the following is NOT considered a swimming pool disinfectant: -
CORRECT ANSWER - Chlorinated hydrocarbons
When chlorine is used as a disinfectant for swimming pools, the form in which
it's disinfectant properties are the greatest is: - CORRECT ANSWER -
Hypochlorous acid
The chemical most commonly used to raise pH is: - CORRECT ANSWER -
Sodium carbonate
An example of a chemical used to stabilize chlorine is: - CORRECT
ANSWER - Cyanuric acid
The chemical reagent recommended by the health department to test chlorine
residual in swimming pools is: - CORRECT ANSWER - D.P.D.
The chemical reagent used most often to test pH in swimming pools is: -
CORRECT ANSWER - Phenol red
Considering all factors, which of the following would be the BEST range for pH
in a swimming pool: - CORRECT ANSWER - 7.2-7.8
, The minimum turnover rate to obtain 100% clarity in a pool is: - CORRECT
ANSWER - Once in eight hours
There is a noticeable odor of chlorine around your pool and bathers are
complaining of eye irritation. Which of the following is most likely to solve the
problem: - CORRECT ANSWER - Break point chlorination
As pH increases, chlorine effectiveness: - CORRECT ANSWER - Decreases
In a high-rate sand filter system, the tanks are backwashed: - CORRECT
ANSWER - All at once
The baffle in the filter tank is there to: - CORRECT ANSWER - Disperse
water evenly over the surface of the filter media
An access manhole is constructed on each tank in sand and anthracite filter
systems: - CORRECT ANSWER - All of the above
A hair and lint strainer should be located: - CORRECT ANSWER - Before the
pump and before the filter
Sodium hypochlorite used as a pool sanitizer also affects the water pH in the
following manner: - CORRECT ANSWER - Raises
Chlorine gas will ________ the pH: - CORRECT ANSWER - Lower
DE systems should be turned off for a "rest": - CORRECT ANSWER - Never
ANSWERS | VERIFIED ANSWERS | EXAM ALREADY GRADED A+ |
LATEST EXAM UPDATE
The percentage of hypoclorous acid formation is most influenced by: -
CORRECT ANSWER - pH
Pool painting is usually done: - CORRECT ANSWER - Before opening in the
spring
When a pool is chlorinated with gas chlorine, the operator must also use: -
CORRECT ANSWER - Soda Ash
The term "chlorine demand" refers to: - CORRECT ANSWER - The amount
of chlorine which will react with substances in the pool
Re-circulation pumps used in swimming pools are the type called: -
CORRECT ANSWER - Centrifugal pumps
Reversing the flow of water through the filters is called: - CORRECT
ANSWER - Backwash
"Slurry feed" or "body feed" refers to: - CORRECT ANSWER - Diatomite
added during a filter run
The term pH is determined by the concentration of: - CORRECT ANSWER -
Hydrogen ions
,Because carbonate ions combine with hydrogen ions, sodium carbonate will
cause pH to: - CORRECT ANSWER - Rise
When enough chlorine is added to cause complete oxidation of all organic
compounds, a sudden drop in residual chlorine may be noticed. The point at
which this occurs is called the: - CORRECT ANSWER - Break-point
"Residual chlorine" refers to: - CORRECT ANSWER - The amount left in the
water after oxidation of organic material
Which of the following is NOT considered a swimming pool disinfectant: -
CORRECT ANSWER - Chlorinated hydrocarbons
When chlorine is used as a disinfectant for swimming pools, the form in which
it's disinfectant properties are the greatest is: - CORRECT ANSWER -
Hypochlorous acid
The chemical most commonly used to raise pH is: - CORRECT ANSWER -
Sodium carbonate
An example of a chemical used to stabilize chlorine is: - CORRECT
ANSWER - Cyanuric acid
The chemical reagent recommended by the health department to test chlorine
residual in swimming pools is: - CORRECT ANSWER - D.P.D.
The chemical reagent used most often to test pH in swimming pools is: -
CORRECT ANSWER - Phenol red
Considering all factors, which of the following would be the BEST range for pH
in a swimming pool: - CORRECT ANSWER - 7.2-7.8
, The minimum turnover rate to obtain 100% clarity in a pool is: - CORRECT
ANSWER - Once in eight hours
There is a noticeable odor of chlorine around your pool and bathers are
complaining of eye irritation. Which of the following is most likely to solve the
problem: - CORRECT ANSWER - Break point chlorination
As pH increases, chlorine effectiveness: - CORRECT ANSWER - Decreases
In a high-rate sand filter system, the tanks are backwashed: - CORRECT
ANSWER - All at once
The baffle in the filter tank is there to: - CORRECT ANSWER - Disperse
water evenly over the surface of the filter media
An access manhole is constructed on each tank in sand and anthracite filter
systems: - CORRECT ANSWER - All of the above
A hair and lint strainer should be located: - CORRECT ANSWER - Before the
pump and before the filter
Sodium hypochlorite used as a pool sanitizer also affects the water pH in the
following manner: - CORRECT ANSWER - Raises
Chlorine gas will ________ the pH: - CORRECT ANSWER - Lower
DE systems should be turned off for a "rest": - CORRECT ANSWER - Never
