Pool Ops Exam Questions and
Answers 100% Pass
surface area formula - ✔✔Rectangle: (length)x(width)
circle: πr²
pool volume - ✔✔Rectangle = length x width x average depth x 7.5
Circle = r x r x 3.14 x 7.5
states of chlorine - ✔✔solid, liquid and gas
chlorine - ✔✔When combined with water it forms Hypochlorous Acid also referred to
as free ____. Free ____ is the active killing disinfectant form of ____. The most common
disinfectant used to treat a pool is ____. It is effective in sanitizing water by killing or
inactivation pathogens and algae. It is also used to oxidize or destroy other materials
from the environment.
chlorine neutralizers - ✔✔Sodium Thiosulfate or Sodium Sulfite
free chlorine - ✔✔"The acceptable range of ____ ____ in a swimming pool is 1.0 to 3.0
ppm
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, The acceptable range of ____ in a spa is 3.0 - 5.0 (ideal is 4.0) "
chloramines - ✔✔they evaporate and are the cause of chlorine smell often in an indoor
pool. They are irritating to the skin and mucous membrane. They are caused by chlorine
combining it self to organic maters such as ammonia
combine chlorine formula - ✔✔= TC - FC (total chlorine - free chlorine)
liquid chlorine - ✔✔has a pH of about 9, therefore when added to water it will raise the
pH of the water.
The chemical name for this is sodium hypochlorite. Sodium Hypochlorite deteriorates
quickly into exposed air . It is affected by sunlight and high temperatures
dry chlorine - ✔✔There are many forms including calcium hypochlorite, lithium
hypochlorite, trichlor and dichlor
cyanuric acid - ✔✔is used to stabilize chlorine. It should be maintained between 30 and
50 ppm. When using to stabilize a pool the chlorine level must stay above 2.0 ppm
bromine - ✔✔"The acceptable range of this in a pool or a spa is 3.0ppm.
it is a disinfectant some times used instead of chlorine. It differs from chlorine in that it
combined can be used as an effective sanitizer "
pH - ✔✔The recommended range is 7.2-7.8
"To raise you should add sodium carbonate also referred to as soda ash
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Answers 100% Pass
surface area formula - ✔✔Rectangle: (length)x(width)
circle: πr²
pool volume - ✔✔Rectangle = length x width x average depth x 7.5
Circle = r x r x 3.14 x 7.5
states of chlorine - ✔✔solid, liquid and gas
chlorine - ✔✔When combined with water it forms Hypochlorous Acid also referred to
as free ____. Free ____ is the active killing disinfectant form of ____. The most common
disinfectant used to treat a pool is ____. It is effective in sanitizing water by killing or
inactivation pathogens and algae. It is also used to oxidize or destroy other materials
from the environment.
chlorine neutralizers - ✔✔Sodium Thiosulfate or Sodium Sulfite
free chlorine - ✔✔"The acceptable range of ____ ____ in a swimming pool is 1.0 to 3.0
ppm
100% Pass Guarantee Katelyn Whitman All Rights Reserved © 2025 1
, The acceptable range of ____ in a spa is 3.0 - 5.0 (ideal is 4.0) "
chloramines - ✔✔they evaporate and are the cause of chlorine smell often in an indoor
pool. They are irritating to the skin and mucous membrane. They are caused by chlorine
combining it self to organic maters such as ammonia
combine chlorine formula - ✔✔= TC - FC (total chlorine - free chlorine)
liquid chlorine - ✔✔has a pH of about 9, therefore when added to water it will raise the
pH of the water.
The chemical name for this is sodium hypochlorite. Sodium Hypochlorite deteriorates
quickly into exposed air . It is affected by sunlight and high temperatures
dry chlorine - ✔✔There are many forms including calcium hypochlorite, lithium
hypochlorite, trichlor and dichlor
cyanuric acid - ✔✔is used to stabilize chlorine. It should be maintained between 30 and
50 ppm. When using to stabilize a pool the chlorine level must stay above 2.0 ppm
bromine - ✔✔"The acceptable range of this in a pool or a spa is 3.0ppm.
it is a disinfectant some times used instead of chlorine. It differs from chlorine in that it
combined can be used as an effective sanitizer "
pH - ✔✔The recommended range is 7.2-7.8
"To raise you should add sodium carbonate also referred to as soda ash
100% Pass Guarantee Katelyn Whitman All Rights Reserved © 2025 2
