CPO MODULE #3 QUIZ QUESTIONS
WITH COMPLETE ANSWERS
Which of the following describes water balance? - Answer-not ph
Why is carbon dioxide added to pool or spa water? - Answer-lower pH
You want to use sodium hypochlorite to raise the chlorine level in your pool. You need
to raise the level by 6.0 ppm to super chlorinate. Your pool volume is 75,000 gallons.
Using the chemical adjustment worksheet and the chemical adjustment guide, how
much sodium hypochlorite do you need to add? - Answer-3.76 gallons
What is disinfection? - Answer-Process of destroying microorganisms
As a disinfectant, what is ozone's limitation? - Answer-It leaves no residual disinfectant
in the water
What is oxidation? - Answer-Process of changing the chemical structure of
contaminants
Which of the following factors affect the disinfection process? - Answer-pH,
temperature, and bather contamination
For formed (solid) stool accidents, pool operators should use the following procedure: -
Answer-Maintain the pH between 7.2 and 7.5 and raise the chlorine level to 2.0 ppm
which of the following factors should you consider when choosing a disinfectant? -
Answer-Chemical safety and storage space
What does total alkalinity measure? - Answer-Ability of water to resist changes in pH
How many pounds of calcium hypochlorite are needed to breakpoint chlorinate a
250,000 gallon pool if free chlorine is 2.0 ppm and total chlorine is 3.5 ppm? - Answer-
40.62 pounds
After testing your pool water, you discover there is not enough sanitizer. You need to
add 3.0 ppm of chlorine. Your pool is 250,000 gallons and the disinfectant you are using
is calcium hypochlorite. Use your chemical adjustment worksheet and the chemical
adjustment guide to calculate how much calcium hypochlorite to add. - Answer-9.375
lbs
which of the following factors contributes to water balance? - Answer-Calcium hardness
WITH COMPLETE ANSWERS
Which of the following describes water balance? - Answer-not ph
Why is carbon dioxide added to pool or spa water? - Answer-lower pH
You want to use sodium hypochlorite to raise the chlorine level in your pool. You need
to raise the level by 6.0 ppm to super chlorinate. Your pool volume is 75,000 gallons.
Using the chemical adjustment worksheet and the chemical adjustment guide, how
much sodium hypochlorite do you need to add? - Answer-3.76 gallons
What is disinfection? - Answer-Process of destroying microorganisms
As a disinfectant, what is ozone's limitation? - Answer-It leaves no residual disinfectant
in the water
What is oxidation? - Answer-Process of changing the chemical structure of
contaminants
Which of the following factors affect the disinfection process? - Answer-pH,
temperature, and bather contamination
For formed (solid) stool accidents, pool operators should use the following procedure: -
Answer-Maintain the pH between 7.2 and 7.5 and raise the chlorine level to 2.0 ppm
which of the following factors should you consider when choosing a disinfectant? -
Answer-Chemical safety and storage space
What does total alkalinity measure? - Answer-Ability of water to resist changes in pH
How many pounds of calcium hypochlorite are needed to breakpoint chlorinate a
250,000 gallon pool if free chlorine is 2.0 ppm and total chlorine is 3.5 ppm? - Answer-
40.62 pounds
After testing your pool water, you discover there is not enough sanitizer. You need to
add 3.0 ppm of chlorine. Your pool is 250,000 gallons and the disinfectant you are using
is calcium hypochlorite. Use your chemical adjustment worksheet and the chemical
adjustment guide to calculate how much calcium hypochlorite to add. - Answer-9.375
lbs
which of the following factors contributes to water balance? - Answer-Calcium hardness
