Pool Operator's Final Exam
1) The percentage of hypoclorous acid formation is most influenced by::
pH
2) Pool painting is usually done:: Before opening in the spring
3) When a pool is chlorinated with gas chlorine, the operator must also
use:: Soda Ash
4) The term "chlorine demand" refers to:: The amount of chlorine which will
react with substances in the pool
5) Re-circulation pumps used in swimming pools are the type called::
Centrifugal pumps
6) Reversing the flow of water through the filters is called:: Backwash
7) "Slurry feed" or "body feed" refers to:: Diatomite added during a filter run
8) The term pH is determined by the concentration of:: Hydrogen ions
9) Because carbonate ions combine with hydrogen ions, sodium
carbonate will cause pH to:: Rise
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, Pool Operator's Final Exam
10) 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:: Break-point
11) "Residual chlorine" refers to:: The amount left in the water after
oxidation of organic material
12) Which of the following is NOT considered a swimming pool
disinfectant:-
13) : Chlorinated hydrocarbons
14) When chlorine is used as a disinfectant for swimming pools, the
form in which it's disinfectant properties are the greatest is::
Hypochlorous acid 14. The chemical most commonly used to raise pH
is:: Sodium carbonate
15) 15. An example of a chemical used to stabilize chlorine is::
Cyanuric acid 16. The chemical reagent recommended by the health
department to test chlorine residual in swimming pools is:: D.P.D.
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1) The percentage of hypoclorous acid formation is most influenced by::
pH
2) Pool painting is usually done:: Before opening in the spring
3) When a pool is chlorinated with gas chlorine, the operator must also
use:: Soda Ash
4) The term "chlorine demand" refers to:: The amount of chlorine which will
react with substances in the pool
5) Re-circulation pumps used in swimming pools are the type called::
Centrifugal pumps
6) Reversing the flow of water through the filters is called:: Backwash
7) "Slurry feed" or "body feed" refers to:: Diatomite added during a filter run
8) The term pH is determined by the concentration of:: Hydrogen ions
9) Because carbonate ions combine with hydrogen ions, sodium
carbonate will cause pH to:: Rise
1/9
, Pool Operator's Final Exam
10) 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:: Break-point
11) "Residual chlorine" refers to:: The amount left in the water after
oxidation of organic material
12) Which of the following is NOT considered a swimming pool
disinfectant:-
13) : Chlorinated hydrocarbons
14) When chlorine is used as a disinfectant for swimming pools, the
form in which it's disinfectant properties are the greatest is::
Hypochlorous acid 14. The chemical most commonly used to raise pH
is:: Sodium carbonate
15) 15. An example of a chemical used to stabilize chlorine is::
Cyanuric acid 16. The chemical reagent recommended by the health
department to test chlorine residual in swimming pools is:: D.P.D.
2/9
