Pool Operator Exam with precise detailed answers

Pool Operator Exam with precise detailed
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answers

whole range chlorine in a pool: ____ to _____ - Correct answer ✔1, 5
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ideal range chlorine in a pool: ____ to _____ - Correct answer ✔2, 4
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whole range chlorine in a spa: ____ to _____ - Correct answer ✔2, 10
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ideal range chlorine in a spa: ____ to _____ - Correct answer ✔3, 5
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4 types of solid chlorine - Correct answer ✔calcium hypochlorite, lithium
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hypochlorite, trichlor, dichlor !| !|




liquid chlorine - Correct answer ✔sodium hypochlorite (NaOCl)
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how active is gas chlorine - Correct answer ✔100%
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the active killing form of chlorine in water - Correct answer
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✔hypochlorous acid (HOCl) !| !|




HOCl = ______ - Correct answer ✔H+ (hydrogen ion) + OCl-
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(hypochlorite ion) !|

, most common granular chlorine (pH range) - Correct answer ✔calcium
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hypochlorite (8.5 - 11, used to super chlorinate water) !| !| !| !| !| !| !| !|




not common form of chlorine due to low active strength (pH) - Correct
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answer ✔lithium hypochlorite (10.8)
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tablet/stick chlorine usually used in erosion feeder (pH - what will it do?)
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- Correct answer ✔trichlor (2.8 - 3.5, lower alkalinity and pH over time)
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salt used as a disinfectant (pH) - Correct answer ✔dichlor (6.7 - common
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in vinyl lined pools)
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most common type of chlorine used (pH) - Correct answer ✔sodium
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hypochlorite (NaOCl - 13) !| !| !|




______ needs special training to use and has a pH of ____ and will
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_____ when added to water - Correct answer ✔gas chlorine, 0, lower
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pH


chlorine is most effective as a pH of _____ - Correct answer ✔7.5
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active disinfectant in the water - Correct answer ✔free chlorine (FC)
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FC is determined by the ______ test and is maintained between ____
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and ____ ppm - Correct answer ✔DPD, 2, 4
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