Pool Operator's Final Exam Guide 2024

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.