CPO Practice QUESTIONS WITH ANSWERS

CPO Practice QUESTIONS WITH ANSWERS
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Which type of filter requires the least amount of water to clean?
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(A) Diatomaceous
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(B) Rapid rate sand
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(C) High rate sand
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(D) Cartridge - CORRECT ANSWERS ✔✔(D) Cartridge
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Cyanuric acid (stabilizer) protects free chlorine (FC) against the
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effects of: |\




(A) Pathogens like Crypto, Giardia, and Shigella
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(B) High Total dissolved solids
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(C) Ultraviolet rays from the sun
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(D) High PH - CORRECT ANSWERS ✔✔(C) Ultraviolet rays from the
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sun
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An erosion chemical feeder is what type of feeder?
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(A) Peristaltic pump
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(B) Piston pump
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(C) Dry chemical feeder
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(D) Gas system - CORRECT ANSWERS ✔✔(C) Dry chemical feeder
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OSHA requires aquatic facilities to maintain:
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(A) Safety Data Sheets only for sanitizing chemicals
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,(B) Lifeguard certifications
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(C) Air temperature recordings
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(D) SDS's for all chemicals used at the facility - CORRECT
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ANSWERS ✔✔(D) SDS's for all chemicals used at the facility
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When mechanical cooling is used on an indoor therapeutic pool
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facility, the recommended ASHRAE fresh air exchange rate should
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be:
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(A) 2 to 4 exchanges per hour
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(B) 4 to 6 exchanges per hour
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(C) 6 to 8 exchanges per hour
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(D) As many as possible - CORRECT ANSWERS ✔✔(B) 4 to 6
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exchanges per hour |\ |\




What condition mandates an immediate closure of your
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swimming pool? |\




(A) Locker room is not clean
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(B) Main drain not visible from the deck
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(C) No automatic feeders installed
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(D) No underwater lights installed - CORRECT ANSWERS ✔✔(B)
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Main drain not visible from the deck
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The reagent commonly used to test PH is:
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(A) DPD
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(B) Sodium Thiosulfate
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(C) Coolomatic
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, (D) Phenol red - CORRECT ANSWERS ✔✔(D) Phenol red
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When should you backwash high rate sand filters that have a
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single pressure gauge?
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(A) After an 8 to 10 psi increase above starting pressure
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(B) Every 2 days
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(C) Once per week
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(D) When the influent and effluent gauges are 10 to 20 psi apart
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- CORRECT ANSWERS ✔✔(A) After an 8 to 10 psi increase above
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starting pressure |\




Oxidation Reduction Potential testing (ORP) is measured in:
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(A) Parts per million (ppm)
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(B) Millivolts (mV)
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(C) Gallons per minute (gpm)
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(D) Free available chlorine (FAC) - CORRECT ANSWERS ✔✔(B)
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Millivolts (mV) |\




How much sodium thiosulfate would you need to lower the free
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chlorine from 18 ppm to 2.0 ppm in a 150,000 gallon pool?
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(A) 35 lbs.
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(B) 30 lbs.
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(C) 25 lbs.
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(D) 39 lbs. - CORRECT ANSWERS ✔✔(D) 39 lbs.
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