POOL OPERATORS TEST BANK 2026
COMPREHENSIVE QUESTIONS AND
ACCURATE SOLUTIONS VERIFIED
◉ Pool painting is usually done: Answer: Before opening in the spring
◉ When a pool is chlorinated with gas chlorine, the operator must also
use: Answer: Soda Ash
◉ The term "chlorine demand" refers to: Answer: The amount of
chlorine which will react with substances in the pool
◉ Re-circulation pumps used in swimming pools are the type called:
Answer: Centrifugal pumps
◉ Reversing the flow of water through the filters is called: Answer:
Backwash
◉ "Slurry feed" or "body feed" refers to: Answer: Diatomite added
during a filter run
◉ The term pH is determined by the concentration of: Answer:
Hydrogen ions
, ◉ Because carbonate ions combine with hydrogen ions, sodium
carbonate will cause pH to: 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: Answer: Break-point
◉ "Residual chlorine" refers to: Answer: The amount left in the water
after oxidation of organic material
◉ Which of the following is NOT considered a swimming pool
disinfectant: 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: Answer:
Hypochlorous acid
◉ The chemical most commonly used to raise pH is: Answer: Sodium
carbonate
◉ An example of a chemical used to stabilize chlorine is: Answer:
Cyanuric acid
◉ The chemical reagent recommended by the health department to test
chlorine residual in swimming pools is: Answer: D.P.D.
COMPREHENSIVE QUESTIONS AND
ACCURATE SOLUTIONS VERIFIED
◉ Pool painting is usually done: Answer: Before opening in the spring
◉ When a pool is chlorinated with gas chlorine, the operator must also
use: Answer: Soda Ash
◉ The term "chlorine demand" refers to: Answer: The amount of
chlorine which will react with substances in the pool
◉ Re-circulation pumps used in swimming pools are the type called:
Answer: Centrifugal pumps
◉ Reversing the flow of water through the filters is called: Answer:
Backwash
◉ "Slurry feed" or "body feed" refers to: Answer: Diatomite added
during a filter run
◉ The term pH is determined by the concentration of: Answer:
Hydrogen ions
, ◉ Because carbonate ions combine with hydrogen ions, sodium
carbonate will cause pH to: 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: Answer: Break-point
◉ "Residual chlorine" refers to: Answer: The amount left in the water
after oxidation of organic material
◉ Which of the following is NOT considered a swimming pool
disinfectant: 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: Answer:
Hypochlorous acid
◉ The chemical most commonly used to raise pH is: Answer: Sodium
carbonate
◉ An example of a chemical used to stabilize chlorine is: Answer:
Cyanuric acid
◉ The chemical reagent recommended by the health department to test
chlorine residual in swimming pools is: Answer: D.P.D.
