Pool Operator's Final Exam Questions and answers | Updated 2024/25 RATED A+

Pool Operator's Final Exam Questions
and answers | Updated 2024/25 RATED
A+
The percentage of hypoclorous acid formation is most influenced by: -
II II II II II II II II II II pH
II II II




II Pool painting is usually done: -
II II II II II II II IIBefore opening in the spring II II II II




When a pool is chlorinated with gas chlorine, the operator must also use: -
II II II II II II II II II II II II II II II II II Soda
Ash
II




The term "chlorine demand" refers to: -
II II II II II II II II II II The amount of chlorine which will react with
II II II II II II II

substances in the pool
II II II II




Re-circulation pumps used in swimming pools are the type called: -
II II II II II II II II II II II II II II Centrifugal
pumps
II




II Reversing the flow of water through the filters is called: -
II II II II II II II II II II II II II Backwash

II "Slurry feed" or "body feed" refers to: -
II II II II II II II II II II Diatomite added during a filter run II II II II II




II The term pH is determined by the concentration of: -
II II II II II II II II II II II II Hydrogen ions II




Because carbonate ions combine with hydrogen ions, sodium carbonate will cause
II II II II II II II II II II II

pH to: - Rise
II II II II II II




When enough chlorine is added to cause complete oxidation of all organic
II II II II II II II II II II II II

compounds, a sudden drop in residual chlorine may be noticed. The point at which
II II II II II II II II II II II II II II

this occurs is called the: - Break-point
II II II II II II II II II




"Residual chlorine" refers to: -
II II II II II II II II The amount left in the water after oxidation of
II II II II II II II II

organic material
II II




Which of the following is NOT considered a swimming pool disinfectant: -
II II II II II II II II II II II II II II

Chlorinated hydrocarbons
II II




When chlorine is used as a disinfectant for swimming pools, the form in which it's
II II II II II II II II II II II II II II II

disinfectant properties are the greatest is: - Hypochlorous acid
II II II II II II II II II II II




II The chemical most commonly used to raise pH is: -
II II II II II II II II II II II II Sodium carbonate II




II An example of a chemical used to stabilize chlorine is: -
II II II II II II II II II II II II II Cyanuric acid II

, The chemical reagent recommended by the health department to test chlorine
II II II II II II II II II II II

residual in swimming pools is: - D.P.D.
II II II II II II II II II




The chemical reagent used most often to test pH in swimming pools is: -
II II II II II II II II II II II II II II II II II Phenol
red
II




Considering all factors, which of the following would be the BEST range for pH in a
II II II II II II II II II II II II II II II II

swimming pool: - 7.2-7.8
II II II II II II




II The minimum turnover rate to obtain 100% clarity in a pool is: -
II II II II II II II II II II II II II II IIOnce in eight hours II II II




There is a noticeable odor of chlorine around your pool and bathers are complaining
II II II II II II II II II II II II II II

of eye irritation. Which of the following is most likely to solve the problem: - Break
II II II II II II II II II II II II II II II II II II

point chlorination
II II




II As pH increases, chlorine effectiveness: -
II II II II II II II II Decreases

II In a high-rate sand filter system, the tanks are backwashed: -
II II II II II II II II II II II II II All at once II II




The baffle in the filter tank is there to: -
II II II II II II II II II II II II II Disperse water evenly over the surface of II II II II II II

the filter media
II II II




An access manhole is constructed on each tank in sand and anthracite filter systems:
II II II II II II II II II II II II II II

- All of the above
II II II II II II II




II A hair and lint strainer should be located: -
II II II II II II II II II II II Before the pump and before the filter II II II II II II




Sodium hypochlorite used as a pool sanitizer also affects the water pH in the
II II II II II II II II II II II II II II

following manner: - Raises
II II II II II II




II Chlorine gas will ________ the pH: - II II II II II II II II II Lower

II DE systems should be turned off for a "rest": -
II II II II II II II II II II II II Never

If the filter run is started with clean filters, the difference between the influent and
II II II II II II II II II II II II II II II

effluent gauges should be: - Very little
II II II II II II II II II




II Glass containers are: - II II II II II II Never allowed in the pool enclosure
II II II II II




Which of the following factors would produce a greater consumption of disinfectant in
II II II II II II II II II II II II II

a pool: - Bather load plus sunlight
II II II II II II II II II




In a stabilized pool, the concentration of cyanuric acid should not exceed: -
II II II II II II II II II II II II II II II II 100
ppm
II




II Spa filtration and recirculation pumps should operate for: -
II II II II II II II II II II II 24 hours continuouslyII II