Exam (elaborations)
POOL OPERATOR EXAM QUETSTIONS WITH COMPLETE ANSWERS
Course
CPO certified pool operator
Institution
CPO Certified Pool Operator
POOL OPERATOR EXAM QUETSTIONS WITH COMPLETE ANSWERS
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Uploaded on
September 28, 2024
Number of pages
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Type
Exam (elaborations)
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Questions & answers
Institution
CPO certified pool operator
Course
CPO certified pool operator
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POOL OPERATOR EXAM QUETSTIONS
WITH COMPLETE ANSWERS
Whole range chlorine in a pool: ____ to _____ - answer-1, 5
Ideal range chlorine in a pool: ____ to _____ - answer-2, 4
Whole range chlorine in a spa: ____ to _____ - answer-2, 10
Ideal range chlorine in a spa: ____ to _____ - answer-3, 5
4 types of solid chlorine - answer-calcium hypochlorite, lithium hypochlorite, trichlor,
dichlor
Liquid chlorine - answer-sodium hypochlorite (naocl)
How active is gas chlorine - answer-100%
The active killing form of chlorine in water - answer-hypochlorous acid (hocl)
Hocl = ______ - answer-h+ (hydrogen ion) + ocl- (hypochlorite ion)
Most common granular chlorine (ph range) - answer-calcium hypochlorite (8.5 - 11,
used to super chlorinate water)
Not common form of chlorine due to low active strength (ph) - answer-lithium
hypochlorite (10.8)
Tablet/stick chlorine usually used in erosion feeder (ph - what will it do?) - answer-
trichlor (2.8 - 3.5, lower alkalinity and ph over time)
Salt used as a disinfectant (ph) - answer-dichlor (6.7 - common in vinyl lined pools)
Most common type of chlorine used (ph) - answer-sodium hypochlorite (naocl - 13)
______ needs special training to use and has a ph of ____ and will _____ when added
to water - answer-gas chlorine, 0, lower ph
Chlorine is most effective as a ph of _____ - answer-7.5
Active disinfectant in the water - answer-free chlorine (fc)
Fc is determined by the ______ test and is maintained between ____ and ____ ppm -
answer-dpd, 2, 4
, Equal to the amount of hypochlorous acid (hocl) and the amt of hypochlorite ions (ocl-) -
answer-free chlorine (fc)
The result of free chlorine reacting with organic compounds - answer-combine chlorine
(cc)
Common name and max for pools and spas for combine chlorine - answer-chloramines,
0.2, 0.5
Cc = - answer-tc - fc
What will a dpd measure - answer-tc, fc
How much cc should a pool have ideally - answer-zero
Shocking the pool is also called - answer-breakpoint chlorination
Breakpoint chlorination is the conversion of ________ into ______ - answer-combine
chlorine, nitrogen gas
Breakpoint chlorination equation - answer-bpc = 10 x cc [bpc = 10 x (tc - fc)]
Whole cyanuric acid range: _____ to ______ppm - answer-0, 100
Ideal cyanuric acid range: _____ to ______ ppm - answer-30, 50
Acts as a protection for chlorine compounds from uv light - answer-cyanuric acid
Cya will act as a stabilizer for _______ but does not
Stabilize ________ - answer-free chlorine, bromine
The only way to reduce cya concentration is to _______ - answer-dilute the water and
replace it
Whole range of bromine: ____ to _____ - answer-2, 10
Ideal range of bromine: _____ to ______ - answer-4, 6
Second most common disinfectant in the pool - answer-bromine
Two types of bromine used - answer-sodium bromide, solid bromide
Bromine in natural form is a ______ but is in _____ form when
Added to pools - answer-reddish brown liquid, solid