Quiz EPR 2512 (Chapter 7 Part B)

What is the term for the active available disinfectant in pool water?

• Calcium hardness

• Total alkalinity

• Combined chlorine

• Residual

What is the process called when chlorine levels are raised to eliminate chloramines?

• Superchlorination

• Oxidation

• Filtration

• Coagulation

Which type of algae is most commonly found in swimming pools?

• Green algae

• Yellow algae

• Red algae

• Black algae

What is the main purpose of testing total alkalinity in pool water?

• To measure chlorine levels

• To assess water clarity

• To stabilize pH levels

• To determine hardness

What is the effect of high free chlorine residual concentration on algae growth?

• Stimulates growth

• Inhibits growth

• Increases turbidity

• No effect

What is the role of pH in swimming pool water chemistry?

• Determines water color

• Increases turbidity

• Controls water temperature

• Affects chlorine effectiveness

What is the purpose of using alum in swimming pools?

• To disinfect water

• To clarify water

• To increase pH

• To lower temperature

What is the main reason for maintaining a high free chlorine residual concentration?

• To increase swimmer comfort

• To reduce turbidity

• To enhance water color

• To prevent algae growth

What is the effect of sunlight on algae growth in outdoor pools?

• Decreases chlorine demand

• No effect

• Stimulates growth

• Inhibits growth

What is the consequence of high levels of total hardness in pool water?

• Increased swimmer comfort

• Corrosion of equipment

• Scaling on surfaces

• Improved water clarity