CPO POOL OPERATOR'S FINAL EXAM
Questions and Answers
1. The percentage of hypoclorous acid formation is most influenced by
Answer Ph
2. Pool painting is usually done
Answer Before opening in the spring
3. When a pool is chlorinated with gas chlorine, the operator must
also use
Answer Soda Ash
4. The term "chlorine demand" refers to
Answer The amount of chlorine which will react with substances in the pool
5. Re-circulation pumps used in swimming pools are the type called
Answer Centrifugal pumps
6. Reversing the flow of water through the filters is called
Answer Backwash
7. "Slurry feed" or "body feed" refers to
1/
11
, Answer Diatomite added during a filter run
8. The term pH is determined by the concentration of
Answer Hydrogen ions
9. Because carbonate ions combine with hydrogen ions, sodium
carbonate will cause pH to
Answer Rise
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
Answer Break-point
11. "Residual chlorine" refers to
Answer The amount left in the water after oxidation of organic material
12. Which of the following is NOT considered a swimming pool
disinfectant
Answer Chlo- rinated hydrocarbons
13. 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
2/
11
Questions and Answers
1. The percentage of hypoclorous acid formation is most influenced by
Answer Ph
2. Pool painting is usually done
Answer Before opening in the spring
3. When a pool is chlorinated with gas chlorine, the operator must
also use
Answer Soda Ash
4. The term "chlorine demand" refers to
Answer The amount of chlorine which will react with substances in the pool
5. Re-circulation pumps used in swimming pools are the type called
Answer Centrifugal pumps
6. Reversing the flow of water through the filters is called
Answer Backwash
7. "Slurry feed" or "body feed" refers to
1/
11
, Answer Diatomite added during a filter run
8. The term pH is determined by the concentration of
Answer Hydrogen ions
9. Because carbonate ions combine with hydrogen ions, sodium
carbonate will cause pH to
Answer Rise
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
Answer Break-point
11. "Residual chlorine" refers to
Answer The amount left in the water after oxidation of organic material
12. Which of the following is NOT considered a swimming pool
disinfectant
Answer Chlo- rinated hydrocarbons
13. 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
2/
11
