2025 WATER TREATMENT PRACTICE EXAM #2
(QUESTIONS & ANSWERS) SOLVED 100%
CORRECT!!
What is a pathogen? Answer - Disease-causing microorganisms.
What is the impact of algae to water quality? Answer - Taste and odor
problems.
What is the concentration of chlorine gas? Answer - 100%.
Which of the following is not used to mix coagulants? Answer - Horizontal
paddle wheel.
What is considered to be a quick remedy to adress a sudden increase in filtered
water turbidity? Answer - Feed a filter-aid chemical to the filter influent.
What is the likely cause of a pinping noise in a pump? Answer - Cavitation
Which of the following controls the efficiency of removing suspended solids in
the sedimentation process? Answer - Flowrate
, What is a sanitary survey? Answer - An analisis to determine all potencial
water quality impacts to a proposed well.
Which of the following categories does bacterial belong to? Answer - Colloidal
Under the Surface Water Treatment Rule, what must the reduction of viruses
be through filtration and disinfection? Answer - 99.99%
Which of the following is not considered free residual chlorine? Answer -
Monochloramine
Why is coliform used as a indicator organism? Answer - It reduce the
complexity and cost of analysis.
What is an example of a non-community, non-transient water Answer - School.
What is the purpose of a packing in a pump? Answer - Control the leakege of
water along the pump shaft and prevent air from entering along the shaft when
the pump is in a suction lift condition.
What does the addition of carbon dioxide do to the pH of water? Answer -
Lowers it.
What is an unconfined aquifer? Answer - One in which groundwater posseses
a free surface open to the atmosphere.
What is static water level in a well? Answer - Water level when pump is not
running.
(QUESTIONS & ANSWERS) SOLVED 100%
CORRECT!!
What is a pathogen? Answer - Disease-causing microorganisms.
What is the impact of algae to water quality? Answer - Taste and odor
problems.
What is the concentration of chlorine gas? Answer - 100%.
Which of the following is not used to mix coagulants? Answer - Horizontal
paddle wheel.
What is considered to be a quick remedy to adress a sudden increase in filtered
water turbidity? Answer - Feed a filter-aid chemical to the filter influent.
What is the likely cause of a pinping noise in a pump? Answer - Cavitation
Which of the following controls the efficiency of removing suspended solids in
the sedimentation process? Answer - Flowrate
, What is a sanitary survey? Answer - An analisis to determine all potencial
water quality impacts to a proposed well.
Which of the following categories does bacterial belong to? Answer - Colloidal
Under the Surface Water Treatment Rule, what must the reduction of viruses
be through filtration and disinfection? Answer - 99.99%
Which of the following is not considered free residual chlorine? Answer -
Monochloramine
Why is coliform used as a indicator organism? Answer - It reduce the
complexity and cost of analysis.
What is an example of a non-community, non-transient water Answer - School.
What is the purpose of a packing in a pump? Answer - Control the leakege of
water along the pump shaft and prevent air from entering along the shaft when
the pump is in a suction lift condition.
What does the addition of carbon dioxide do to the pH of water? Answer -
Lowers it.
What is an unconfined aquifer? Answer - One in which groundwater posseses
a free surface open to the atmosphere.
What is static water level in a well? Answer - Water level when pump is not
running.
