Certified Pool Operator Final Exam (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A

Certified Pool Operator Final Exam (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A Q: Because carbonate ions combine with hydrogen ions, sodium carbonate will cause pH to: Answer: Rise Q: 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: Answer: Break-point Q: "Residual chlorine" refers to: Answer: The amount left in the water after oxidation of organic material Q: Which of the following is NOT considered a swimming pool disinfectant: Answer: Chlorinated hydrocarbons Q: When chlorine is used as a disinfectant for swimming pools, the form in which it's disinfectant properties are the greatest is: Answer: Hypochlorous acid Q: The chemical most commonly used to raise pH is: Answer: Sodium carbonate Q: An example of a chemical used to stabilize chlorine is: Answer: Cyanuric acid Q: The chemical reagent recommended by the health department to test chlorine residual in swimming pools is: Answer: D.P.D. Q: The chemical reagent used most often to test pH in swimming pools is: Answer: Phenol red Q: Considering all factors, which of the following would be the BEST range for pH in a swimming pool: Answer: 7.2-7.8 Q: The minimum turnover rate to obtain 100% clarity in a pool is: Answer: Once in eight hours Q: 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: Answer: Break point chlorination Q: As pH increases, chlorine effectiveness: Answer: Decreases Q: In a high-rate sand filter system, the tanks are backwashed: Answer: All at once Q: The baffle in the filter tank is there to: Answer: Disperse water evenly over the surface of the filter media