Pool Operator's Final Exam: Questions
& Answers
The percentage of hypochlorous acid formation is most influenced by:
(Ans- pH
Pool painting is usually done:
(Ans- Before opening in the spring
When a pool is chlorinated with gas chlorine, the operator must also use:
(Ans- Soda Ash
The term "chlorine demand" refers to:
(Ans- The amount of chlorine which will react with substances in the pool
Re-circulation pumps used in swimming pools are the type called:
(Ans- Centrifugal pumps
Reversing the flow of water through the filters is called:
(Ans- Backwash
"Slurry feed" or "body feed" refers to:
(Ans- Diatomite added during a filter run
The term pH is determined by the concentration of:
(Ans- Hydrogen ions 1 / 2
Because carbonate ions combine with hydrogen ions, sodium carbonate
will cause pH to:
(Ans- 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:
(Ans- Break-point
"Residual chlorine" refers to:
(Ans- The amount left in the water after oxidation of organic material
Which of the following is NOT considered a swimming pool disinfectant:
(Ans- Chlorinated hydrocarbons
When chlorine is used as a disinfectant for swimming pools, the form in
which it's disinfectant properties are the greatest is:
(Ans- Hypochlorous acid
The chemical most commonly used to raise pH is:
(Ans- Sodium carbonate
An example of a chemical used to stabilize chlorine is:
(Ans- Cyanuric acid
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