Water Treatment OIT Test Exam
Questions And 100% Verified Answers |
Latest 2025/ 2026 Update | Graded A+
a) screens, coagulation, flocculation, filters, chlorination - correct
answer-Which of the following is the correct order of processes within a
cognitional surface water treatment plant?
a) screens, coagulation, flocculation, filters, chlorination
b) screens, flocculation, coagulation, chlorination, filters
c) chlorination, screens, filtration, coagulation, flocculation
d) screens, filters, flocculation, coagulation, chlorination
b) it is the amount of time allowed for chlorine to react in water to
provide disinfection - correct answer-What does the term 'contact time'
mean?
a) it is the amount of time a person is exposed to chlorine
b) it is the amount of time allowed for chlorine to react in water to
provide disinfection
,c) it is the amount of time a coagulant is exposed to water before
flocculation occurs
d) it is the amount of time it takes for chlorine to sterilize water
d) negative pressure in the water main - correct answer-Backflow
siphonage is caused by:
a) positive pressure in the water main
b) unprotected connections
c) unprotected openings
d) negative pressure in the water main
b) 140 kPa - correct answer-When flushing a water main, operators
should ensure that the pressure in nearby areas does not drop below
_______.
a) 60 kPa
b) 140 kPa
c) 350 kPa
d) 550 kPa
, c) peak demand (L/hour) - correct answer-Which of the following best
describes the largest volume of water a distribution system would
normally supply during a day?
a) minimum demand (L/hour)
b) average demand (L/hour)
c) peak demand (L/hour)
d) average demand per person (L/hour/person)
d) remove deposits from the pipeline - correct answer-Distribution lines
are flushed periodically to:
a) increase water pressure in the system
b) reduce the risk of water hammer
c) ensure that chlorine does not accumulate in pipes
d) remove deposits from the pipeline
Questions And 100% Verified Answers |
Latest 2025/ 2026 Update | Graded A+
a) screens, coagulation, flocculation, filters, chlorination - correct
answer-Which of the following is the correct order of processes within a
cognitional surface water treatment plant?
a) screens, coagulation, flocculation, filters, chlorination
b) screens, flocculation, coagulation, chlorination, filters
c) chlorination, screens, filtration, coagulation, flocculation
d) screens, filters, flocculation, coagulation, chlorination
b) it is the amount of time allowed for chlorine to react in water to
provide disinfection - correct answer-What does the term 'contact time'
mean?
a) it is the amount of time a person is exposed to chlorine
b) it is the amount of time allowed for chlorine to react in water to
provide disinfection
,c) it is the amount of time a coagulant is exposed to water before
flocculation occurs
d) it is the amount of time it takes for chlorine to sterilize water
d) negative pressure in the water main - correct answer-Backflow
siphonage is caused by:
a) positive pressure in the water main
b) unprotected connections
c) unprotected openings
d) negative pressure in the water main
b) 140 kPa - correct answer-When flushing a water main, operators
should ensure that the pressure in nearby areas does not drop below
_______.
a) 60 kPa
b) 140 kPa
c) 350 kPa
d) 550 kPa
, c) peak demand (L/hour) - correct answer-Which of the following best
describes the largest volume of water a distribution system would
normally supply during a day?
a) minimum demand (L/hour)
b) average demand (L/hour)
c) peak demand (L/hour)
d) average demand per person (L/hour/person)
d) remove deposits from the pipeline - correct answer-Distribution lines
are flushed periodically to:
a) increase water pressure in the system
b) reduce the risk of water hammer
c) ensure that chlorine does not accumulate in pipes
d) remove deposits from the pipeline
