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CPO EXAM LATEST ALL 200 QUESTIONS AND CORRECT DETAILED SOLUTIONS JUST RELEASED
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CPO EXAM LATEST ALL 200 QUESTIONS AND CORRECT DETAILED SOLUTIONS JUST RELEASED
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Page 1 of 38CPO EXAM LATEST 2024-2025 ALL 200 QUESTIONS AND
CORRECT DETAILED SOLUTIONS JUST RELEASED
to lower pH add: - ANSWER-muriatic acid
carbon dioxide
QUESTION: to increase pH add: - ANSWER-sodium carbonate
sodium hydroxide
sodium sesquicarbonate
QUESTION: the acceptable pH range is:
a) 6.8-7.0
b) 7.2-7.8
c) 7.0-7.4
d) none of the above - ANSWER-b) 7.2-7.8
QUESTION: the ideal pH range is:
a) 7.4-7.6
b) 7.8-8.0
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c) 6.8-7.4 - ANSWER-a) 7.4-7.6
QUESTION: free chlorine is a(n):
a) oxidizer
b) stabilizer
c) active disinfectant - ANSWER-c) active disinfectant
QUESTION: it is common practice to maintain free chlorine at:
a) 1.0-2.0 ppm
b) 2.0-4.0 ppm
c) 5.0-7.0 ppm - ANSWER-b) 2.0-4.0 ppm
QUESTION: what is the maximum free chlorine that should be used?
a) 6.0 ppm
b) 1.0 ppm
c) 5.0 ppm - ANSWER-c) 5.0 ppm
QUESTION: combined chlorine is NOT an effective:
a) oxidizer
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b) stabilizer
c) disinfectant - ANSWER-c) disinfectant
QUESTION: hypochlorous acid is a(n):
a) oxidizer
b) stabilizer
c) disinfectant
d) both A and C - ANSWER-d) both A and C
QUESTION: the maximum combined chlorine allowed in a pool is:
a) 0.5 ppm
b) 0.7 ppm
c) 0.1 ppm
d) 0.2 ppm - ANSWER-d) 0.2 ppm
QUESTION: available chlorine content is a comparison of the relative amount of ________
released into water for different disinfectants. - ANSWER-chlorine
QUESTION: active chlorine percentage is the percentage by _________ of technical grade active
ingredient in the product. - ANSWER-weight
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QUESTION: name the unstabilized chlorines/disinfectants - ANSWER-sodium hypochlorite
calcium hypochlorite
lithium hypochlorite
chlorine gas
QUESTION: name the stabilized disinfectants - ANSWER-trichlor
dichlor
QUESTION: the CyA level should be maintained between:
a) 30 and 50 ppm
b) 50 and 100 ppm
c) 10 and 20 ppm
d) 10 and 40 ppm - ANSWER-a) 30 and 50 ppm
QUESTION: CyA is typically used to: - ANSWER-protect chlorine from the effects of UV light and
sunlight
QUESTION: what is the most common method of reducing CyA concentration? - ANSWER-
partially drain and replace water with fresh, potable water
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