CPO Certification Exam Prep – Full Pool & Spa Operator Questions With Verified Answers.

b




The percentage of hypoclorous acid formation is most influenced by: - CORRECT
n n n n n n n n n n n b




bANSWER✔✔pH
n




n




b




b




b




b




Re- b




b




Reversing the flow of water through the filters is called: - CORRECT
n n n n n n n n n n n




bANSWER✔✔Backwash
n




b




b




The term pH is determined by the concentration of: - CORRECT ANSWER✔✔Hydrogen
n n n n n n n n n n n b




ions
b n




b




b




Break-point

, "Residual chlorine" refers to: - CORRECT ANSWER✔✔ The amount left in the water after
n n n n n n n n n n n n




oxidation of organic material
n n n n




n CORRECT



n




n Sodium


n Cyanuric


The chemical reagent recommended by the health department to test chlorine residual in
n n n n n n n n n n n n




swimming pools is: - CORRECT ANSWER✔✔ D.P.D.
n n n n n n




n CORRECT


Considering all factors, which of the following would be the BEST range for pH in a
n n n n n n n n n n n n n n n




swimming pool: - CORRECT ANSWER✔✔ 7.2-7.8
n n n n n




The minimum turnover rate to obtain 100% clarity in a pool is:
n n n n n n n n n n n n - CORRECT
n




ANSWER✔✔ Once in eight hours
n n n n




n CORRECT


n Decreases

In a high-rate sand filter system, the tanks are backwashed: -
n n n n n n n n n n n CORRECT ANSWER✔✔ All at n n




once
n




The baffle in the filter tank is there to: - CORRECT ANSWER✔✔ Disperse water evenly over
n n n n n n n n n n n n n n




the surface of the filter media
n n n n n n




All of the above n n n




A hair and lint strainer should be located:
n n n n n n n n - CORRECT ANSWER✔✔ Before the pump and
n n n n n




before the filter
n n n