Pool Operator's Final Exam UPDATED
ACTUAL Questions and CORRECT
Answers
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.
The chemical reagent used most often to test pH in swimming pools is: - CORRECT
ANSWER✔✔- Phenol red
Considering all factors, which of the following would be the BEST range for pH in a
swimming pool: - CORRECT ANSWER✔✔- 7.2-7.8
The minimum turnover rate to obtain 100% clarity in a pool is: - CORRECT ANSWER✔✔-
Once in eight hours
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: - CORRECT
ANSWER✔✔- Break point chlorination
ACTUAL Questions and CORRECT
Answers
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.
The chemical reagent used most often to test pH in swimming pools is: - CORRECT
ANSWER✔✔- Phenol red
Considering all factors, which of the following would be the BEST range for pH in a
swimming pool: - CORRECT ANSWER✔✔- 7.2-7.8
The minimum turnover rate to obtain 100% clarity in a pool is: - CORRECT ANSWER✔✔-
Once in eight hours
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: - CORRECT
ANSWER✔✔- Break point chlorination
