Pool Operator Exam Questions and
Answers Graded A+
whole range chlorine in a pool: ____ to _____ - Correct answer-1, 5
ideal range chlorine in a pool: ____ to _____ - Correct answer-2, 4
whole range chlorine in a spa: ____ to _____ - Correct answer-2, 10
ideal range chlorine in a spa: ____ to _____ - Correct answer-3, 5
4 types of solid chlorine - Correct answer-calcium hypochlorite, lithium
hypochlorite, trichlor, dichlor
liquid chlorine - Correct answer-sodium hypochlorite (NaOCl)
how active is gas chlorine - Correct answer-100%
the active killing form of chlorine in water - Correct answer-hypochlorous acid
(HOCl)
HOCl = ______ - Correct answer-H+ (hydrogen ion) + OCl- (hypochlorite ion)
most common granular chlorine (pH range) - Correct answer-calcium hypochlorite
(8.5 - 11, used to super chlorinate water)
, not common form of chlorine due to low active strength (pH) - Correct answer-
lithium hypochlorite (10.8)
tablet/stick chlorine usually used in erosion feeder (pH - what will it do?) - Correct
answer-trichlor (2.8 - 3.5, lower alkalinity and pH over time)
salt used as a disinfectant (pH) - Correct answer-dichlor (6.7 - common in vinyl
lined pools)
most common type of chlorine used (pH) - Correct answer-sodium hypochlorite
(NaOCl - 13)
______ needs special training to use and has a pH of ____ and will _____ when
added to water - Correct answer-gas chlorine, 0, lower pH
chlorine is most effective as a pH of _____ - Correct answer-7.5
active disinfectant in the water - Correct answer-free chlorine (FC)
FC is determined by the ______ test and is maintained between ____ and ____
ppm - Correct answer-DPD, 2, 4
equal to the amount of hypochlorous acid (HOCl) and the amt of hypochlorite ions
(OCl-) - Correct answer-free chlorine (fc)
the result of free chlorine reacting with organic compounds - Correct answer-
combine chlorine (CC)
Answers Graded A+
whole range chlorine in a pool: ____ to _____ - Correct answer-1, 5
ideal range chlorine in a pool: ____ to _____ - Correct answer-2, 4
whole range chlorine in a spa: ____ to _____ - Correct answer-2, 10
ideal range chlorine in a spa: ____ to _____ - Correct answer-3, 5
4 types of solid chlorine - Correct answer-calcium hypochlorite, lithium
hypochlorite, trichlor, dichlor
liquid chlorine - Correct answer-sodium hypochlorite (NaOCl)
how active is gas chlorine - Correct answer-100%
the active killing form of chlorine in water - Correct answer-hypochlorous acid
(HOCl)
HOCl = ______ - Correct answer-H+ (hydrogen ion) + OCl- (hypochlorite ion)
most common granular chlorine (pH range) - Correct answer-calcium hypochlorite
(8.5 - 11, used to super chlorinate water)
, not common form of chlorine due to low active strength (pH) - Correct answer-
lithium hypochlorite (10.8)
tablet/stick chlorine usually used in erosion feeder (pH - what will it do?) - Correct
answer-trichlor (2.8 - 3.5, lower alkalinity and pH over time)
salt used as a disinfectant (pH) - Correct answer-dichlor (6.7 - common in vinyl
lined pools)
most common type of chlorine used (pH) - Correct answer-sodium hypochlorite
(NaOCl - 13)
______ needs special training to use and has a pH of ____ and will _____ when
added to water - Correct answer-gas chlorine, 0, lower pH
chlorine is most effective as a pH of _____ - Correct answer-7.5
active disinfectant in the water - Correct answer-free chlorine (FC)
FC is determined by the ______ test and is maintained between ____ and ____
ppm - Correct answer-DPD, 2, 4
equal to the amount of hypochlorous acid (HOCl) and the amt of hypochlorite ions
(OCl-) - Correct answer-free chlorine (fc)
the result of free chlorine reacting with organic compounds - Correct answer-
combine chlorine (CC)
