Pool Operator's (NVPools) UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Surface Area (rectangle,circle) - CORRECT ANSWER - length x width
Pool Volume (rectangle,circle) - CORRECT ANSWER - length x width x average depth x 7.5
Chlorine comes in 3 forms - CORRECT ANSWER - solid, liquid and gas
When chlorine is combined with water also referred as free chlorine which is the active killing
disinfectant form of chlorine it forms - CORRECT ANSWER - Hypochlorous Acid
most common disinfectant used to treat a pool, effective in sanitizing water by killing or
inactivating pathogens and algae, used to oxidize or destroy other materials from the
environment - CORRECT ANSWER - Chlorine
Chemicals used to neutralize chlorine - CORRECT ANSWER - sodium sulfite
Acceptable range of free chlorine in a swimming pool - CORRECT ANSWER - 1.0 to 3.0
ppm
Acceptable range of chlorine in a spa - CORRECT ANSWER - 3.0 to 5.0
evaporate and are the cause of chlorine smell, are irritating to the skin and mucous membrane,
caused by chlorine combining it self to organic maters such as ammonia - CORRECT
ANSWER - Chloramines
, Combine chlorine formula - CORRECT ANSWER - Combine Chlorine equals Total Chlorine
plus Free Chlorine
has a pH of about 9, when added to water it raises the pH of the water - CORRECT
ANSWER - Liquid chlorine
calcium hypochlorite, lithium hypochlorite, trichlor and dichlor - CORRECT ANSWER -
Forms of dry chlorine
deteriorates quickly into exposed air; it's affected by sunlight and high temps Chemical name for
liquid chlorine - CORRECT ANSWER - sodium hypochlorite
Cyanuric Acid (CA) is used to - CORRECT ANSWER - stabilize chlorine
Cyanuric Acid (CA) should be maintained between - CORRECT ANSWER - 30 to 50 ppm
When using Cyanuric Acid (CA) to stabilize a pool the chlorine level must stay above -
CORRECT ANSWER - 2 ppm
The acceptable range of Bromine in a pool or a spa - CORRECT ANSWER - 3 ppm
disinfectant some times used instead of chlorine, can be used as an effective sanitizer -
CORRECT ANSWER - Bromine
The recommended range for pH is - CORRECT ANSWER - 7.2-7.8
To raise pH you should add - CORRECT ANSWER - sodium carbonate
To lower the pH you should add - CORRECT ANSWER - Muriatic acid
ACTUAL Exam Questions and CORRECT
Answers
Surface Area (rectangle,circle) - CORRECT ANSWER - length x width
Pool Volume (rectangle,circle) - CORRECT ANSWER - length x width x average depth x 7.5
Chlorine comes in 3 forms - CORRECT ANSWER - solid, liquid and gas
When chlorine is combined with water also referred as free chlorine which is the active killing
disinfectant form of chlorine it forms - CORRECT ANSWER - Hypochlorous Acid
most common disinfectant used to treat a pool, effective in sanitizing water by killing or
inactivating pathogens and algae, used to oxidize or destroy other materials from the
environment - CORRECT ANSWER - Chlorine
Chemicals used to neutralize chlorine - CORRECT ANSWER - sodium sulfite
Acceptable range of free chlorine in a swimming pool - CORRECT ANSWER - 1.0 to 3.0
ppm
Acceptable range of chlorine in a spa - CORRECT ANSWER - 3.0 to 5.0
evaporate and are the cause of chlorine smell, are irritating to the skin and mucous membrane,
caused by chlorine combining it self to organic maters such as ammonia - CORRECT
ANSWER - Chloramines
, Combine chlorine formula - CORRECT ANSWER - Combine Chlorine equals Total Chlorine
plus Free Chlorine
has a pH of about 9, when added to water it raises the pH of the water - CORRECT
ANSWER - Liquid chlorine
calcium hypochlorite, lithium hypochlorite, trichlor and dichlor - CORRECT ANSWER -
Forms of dry chlorine
deteriorates quickly into exposed air; it's affected by sunlight and high temps Chemical name for
liquid chlorine - CORRECT ANSWER - sodium hypochlorite
Cyanuric Acid (CA) is used to - CORRECT ANSWER - stabilize chlorine
Cyanuric Acid (CA) should be maintained between - CORRECT ANSWER - 30 to 50 ppm
When using Cyanuric Acid (CA) to stabilize a pool the chlorine level must stay above -
CORRECT ANSWER - 2 ppm
The acceptable range of Bromine in a pool or a spa - CORRECT ANSWER - 3 ppm
disinfectant some times used instead of chlorine, can be used as an effective sanitizer -
CORRECT ANSWER - Bromine
The recommended range for pH is - CORRECT ANSWER - 7.2-7.8
To raise pH you should add - CORRECT ANSWER - sodium carbonate
To lower the pH you should add - CORRECT ANSWER - Muriatic acid
