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NEBRASKA POOL OPERATOR-S
LICENSE ACTUAL TEST EXAM
WITH QUESTIONS WITH CORRECT
ANSWERS GRADED A= guaranteed
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"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. The chemical reagent used most often to test pH in swimming pools is: - ANSWER- Phenol red Considering all factors, which of the following would be the BEST range for pH in a swimming pool: - ANSWER-7.2-7. The minimum turnover rate to obtain 100% clarity in a pool is: - 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: - ANSWER- Break point chlorination As pH increases, chlorine effectiveness: - ANSWER-Decreases In a high-rate sand filter system, the tanks are backwashed: - ANSWER-All at once The baffle in the filter tank is there to: - ANSWER-Disperse water evenly over the surface of the filter media An access manhole is constructed on each tank in sand and anthracite filter systems: - ANSWER-All of the above A hair and lint strainer should be located: - ANSWER-Before the pump and before the filter Sodium hypochlorite used as a pool sanitizer also affects the water pH in the following manner: - ANSWER-Raises Chlorine gas will ________ the pH: - ANSWER-Lower DE systems should be turned off for a "rest": - ANSWER-Never If the filter run is started with clean filters, the difference between the influent and effluent gauges should be: - ANSWER-Very little Glass containers are: - ANSWER-Never allowed in the pool enclosure
Is this pool balanced, aggressive, or scale-forming? - ANSWER-Scaling Daily records should be maintained to verify maintenance, operation procedures, and readings: - ANSWER-True The best time to vacuum a pool is early in the morning before bathers stir up dirt which has settled on the bottom: - ANSWER-True All injuries and first aid treatments administered should be documented: - ANSWER- True As a pool operator, you must ensure safe conditions and safety to your patrons at all times: - ANSWER-True Accident prevention is a continuous program that is designed to provide a safe environment for pool patrons: - ANSWER-True Filters are responsible for keeping the pool water "biologically clean": - ANSWER-False Periodic super chlorination of a pool is a good preventative measure on avoiding algae problems: - ANSWER-True The pool operator is responsible for warning patrons of all observable and hidden dangers in and around the pool area: - ANSWER-True The measure of a solution's resistance to change in pH is referred to as total alkalinity: - ANSWER-True Daily record keeping is mandated by most state codes and regulations: - ANSWER- True It is suggested that wading pools have a turnover time of between 2 and 4 hours: - ANSWER-False The pH range of 7.2 to 7.8 is acceptable and should be maintained at all times: - ANSWER-False If air bubbles are noticed in the water you should first check all possible places for air leaks on the suction side of the pump: - ANSWER-True Return Line: - ANSWER-H Filter: - ANSWER-C Main Drains: - ANSWER-A
Vacuum Gauge: - ANSWER-G Flow Meter: - ANSWER-F Skimmers: - ANSWER-N Motor: - ANSWER-K Inlets: - ANSWER-B Effluent Gauge: - ANSWER-I Hair/Lint Strainer: - ANSWER-L Backwash Pit: - ANSWER-D Influent Gauge: - ANSWER-J Backwash Line: - ANSWER-M Pump: - ANSWER-O Suction Manifold: - ANSWER-E A pool has a length of 60 feet, a width of 25 feet and 2 constant slopes, the shallow end slope goes from 2 to 4 feet, and the deep end slope goes from 4 to 7 feet. How many gallons of water are in this pool? Show all work: - ANSWER-1500x4.25=6, 6,375x7.5=47, The percentage of hypoclorous acid formation is most influenced by: - ANSWER-pH 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
