CPO Certified Pool Operator Exam Comprehensive Resource To Help You Ace Exams Includes Frequently Tested Questions With ELABORATED 100% Correct COMPLETE SOLUTIONS Guaranteed Pass First Attempt!! Current Update!! Instant Download Pdf

CPO Certified Pool Operator Exam Comprehensive Resource To Help You Ace Exams Includes Frequently Tested Questions With ELABORATED 100% Correct COMPLETE SOLUTIONS Guaranteed Pass First Attempt!! Current Update!! Instant Download Pdf 1. The reagent commonly used to test PH is: (A) DPD (B) Sodium Thiosulfate (C) Coolomatic (D) Phenol red - Correct Answer: (D) Phenol red 2. When should you backwash high rate sand filters that have a single pressure gauge? (A) After an 8 to 10 psi increase above starting pressure (B) Every 2 days (C) Once per week (D) When the influent and effluent gauges are 10 to 20 psi apart - Correct Answer: (A) After an 8 to 10 psi increase above starting pressure 3. Oxidation Reduction Potential testing (ORP) is measured in: (A) Parts per million (ppm) (B) Millivolts (mV) (C) Gallons per minute (gpm) (D) Free available chlorine (FAC) - Correct Answer: (B) Millivolts (mV) 4. How much sodium thiosulfate would you need to lower the free chlorine from 18 ppm to 2.0 ppm in a 150,000 gallon pool? (A) 35 lbs. (B) 30 lbs. (C) 25 lbs. (D) 39 lbs. - Correct Answer: (D) 39 lbs. 5. Evaporation heat losses from a pool are highest under which environmental condition? (A) High relative humidity (B) Low relative humidity (C) Clear sky (D) Low barometric pressure - Correct Answer: (B) Low relative humidity 6. The daily opening checklist should be used to: (A) Check the design of the facility (B) Ensure all safety equipment is in place (C) Check that all ground wires are properly connected (D) Ensure the heater is properly sized - Correct Answer: (B) Ensure all safety equipment is in place 7. You have a 25,000 gallon hotel pool with a calcium hardness level of 170 ppm. How much calcium chloride (77%) would be required to increase this to 250 ppm? (A) 20 lbs. (B) 25 lbs. (C) 18 lbs. (D) 24 lbs. - Correct Answer: (D) 24 lbs. 8. Which chemical is sued to lower the pH value of pool or spa water? (A) Sodium bicarbonate (B) Fresh water (C) Sodium bisulfate (D) Calcium chloride - Correct Answer: (C) Sodium bisulfate 9. In a circulation system, the commonly accepted practice is to have: (A) 75% of the water return from the main drain (B) 50%of the water return via the main drain and 50% from the surface (C) 10% of the water return via the surface and 90% from the main drain (D) 75% of the water return from the surface - Correct Answer: (D) 75% of the water return from the surface 10. There is a diarrheal accident in 206,000 gallon pool. According to the CDC, the first step you should take to correctly handle this incident is: (A) Remove all the swimmers from the pool (B) Remove the excrement from the pool (C) Backwash the filters (D) add 20 lbs. sodium bicarbonate - Correct Answer: (A) Remove all the swimmers from the pool