CPO CERTIFICATION PRACTICE TEST
Questions and Answers
1. You operate a 120,000 gallon pool, and upon performing your
hourly
chemical tests you observe the following readings
Total Available Chlorine reading is
1.6 Free available chlorine reading
is 1.5 pH is 7.4
Your supervising lifeguard has just informed you that you have had a
fecal incident occur; a solid stool has been discharged into the pool.
According to the Centers for Disease Control, as the CPO, you should
do the following
A. clear the pool of users and boost the free chlorine to 17 ppm
B. clear the pool and raise the free chlorine to 2 ppm
C. allow swimmers to remain in the pool, but raise the free chlorine to
10 ppm.
D. none of the above
Answer B. clear the pool and raise the free chlorine to 2 ppm
2. Assuming that your local health department requires you to
,raise the free chlorine to 5 ppm, how much sodium hypochlorite
would be needed to raise the free chlorine in the pool in
question #1 to that level?
A. 6 gallons
B. 3.5 gallons
C. 9 gallons
D. 35 gallons
Answer B. 3.5 gallons
3. You are the CPO for an indoor health club pool. The facility
manager informs you that he is receiving complaints about a strong
chlorine odor in the pool area, and several members have
complained of eye irritation. The most likely cause of these
complaints is
A. too much free chlorine in the water
B. too few swimmers in the pool
C. high levels of chloramines in the pool
D. high calcium levels in the water
Answer C. high levels of chloramines in the pool
4. To determine the level of chloramines in the water, you should do
which of the following?
,A. test for free chlorine and pH, then divide the pH number by the
free chlorine number
B. test for total chlorine and free chlorine, then subtract the
free chlorine number from the total chlorine number
C. test for total chlorine and combined chlorine, then subtract
the combined chlorine number from the free chlorine number
D. test for total alkalinity and pH, then multiply the total alkalinity
number by the pH number
Answer B. test for total chlorine and free chlorine, then subtract the free chlorine number from
the total chlorine number
5. You operate a 45,000 gallon indoor pool, and upon doing your
hourly
chemical tests you observe the following readings
Total available chlorine is
2.2 Free available
chlorine is 1.4 pH is 7.6
What is the level of chloramines in this pool?
A. 3.6
B. .8
C. -.8
D. 2.8
Answer
, 6. To remove the chloramines in the pool in question #5, how
much of the following compounds would be needed?
A).Using Chlorine gas
A. 4 lbs.
B. 24.13 lbs.
C. 5.666 lbs.
D. 2.413 lbs.
B).Using Sodium Hypochlorite
A. 12 gallons
B. 2.48 gallons
C. 4.05 gallons
D. 3.11 gallons
C).Using Calcium Hypochlorite
A. 3.71 lbs.
B. 2.36 lbs.
C. 37.1 lbs.
D. 5 lbs.
Answer A) A
B) B
C) A
Questions and Answers
1. You operate a 120,000 gallon pool, and upon performing your
hourly
chemical tests you observe the following readings
Total Available Chlorine reading is
1.6 Free available chlorine reading
is 1.5 pH is 7.4
Your supervising lifeguard has just informed you that you have had a
fecal incident occur; a solid stool has been discharged into the pool.
According to the Centers for Disease Control, as the CPO, you should
do the following
A. clear the pool of users and boost the free chlorine to 17 ppm
B. clear the pool and raise the free chlorine to 2 ppm
C. allow swimmers to remain in the pool, but raise the free chlorine to
10 ppm.
D. none of the above
Answer B. clear the pool and raise the free chlorine to 2 ppm
2. Assuming that your local health department requires you to
,raise the free chlorine to 5 ppm, how much sodium hypochlorite
would be needed to raise the free chlorine in the pool in
question #1 to that level?
A. 6 gallons
B. 3.5 gallons
C. 9 gallons
D. 35 gallons
Answer B. 3.5 gallons
3. You are the CPO for an indoor health club pool. The facility
manager informs you that he is receiving complaints about a strong
chlorine odor in the pool area, and several members have
complained of eye irritation. The most likely cause of these
complaints is
A. too much free chlorine in the water
B. too few swimmers in the pool
C. high levels of chloramines in the pool
D. high calcium levels in the water
Answer C. high levels of chloramines in the pool
4. To determine the level of chloramines in the water, you should do
which of the following?
,A. test for free chlorine and pH, then divide the pH number by the
free chlorine number
B. test for total chlorine and free chlorine, then subtract the
free chlorine number from the total chlorine number
C. test for total chlorine and combined chlorine, then subtract
the combined chlorine number from the free chlorine number
D. test for total alkalinity and pH, then multiply the total alkalinity
number by the pH number
Answer B. test for total chlorine and free chlorine, then subtract the free chlorine number from
the total chlorine number
5. You operate a 45,000 gallon indoor pool, and upon doing your
hourly
chemical tests you observe the following readings
Total available chlorine is
2.2 Free available
chlorine is 1.4 pH is 7.6
What is the level of chloramines in this pool?
A. 3.6
B. .8
C. -.8
D. 2.8
Answer
, 6. To remove the chloramines in the pool in question #5, how
much of the following compounds would be needed?
A).Using Chlorine gas
A. 4 lbs.
B. 24.13 lbs.
C. 5.666 lbs.
D. 2.413 lbs.
B).Using Sodium Hypochlorite
A. 12 gallons
B. 2.48 gallons
C. 4.05 gallons
D. 3.11 gallons
C).Using Calcium Hypochlorite
A. 3.71 lbs.
B. 2.36 lbs.
C. 37.1 lbs.
D. 5 lbs.
Answer A) A
B) B
C) A
