Drinking Water Treatment
Practice Exam (OHIO Class 1)
questions with complete verified
solutions (graded A+)
Many sources of water are directly suitable for drinking purposes without
treatment
True
False - answer False
Water treatment plant operators have the responsibility for the health and
well-being of the community they serve.
True
False - answer True
What is the purpose of coagulation-flocculation?
A. To control corrosion
B. To filter out suspended particles
C. To gather together fine, light particles to form floc to aid the
sedimentation and filtration processes.
D. To settle out larger suspended particles - answer C. To gather together
fine, light particles to form floc to aid the sedimentation and filtration
processes.
What is the purpose of filtration?
A. To control corrosion
, B. To filter out suspended particles
C. To gather together fine, light particles to form floc to aid the
sedimentation and filtration processes.
D. To settle out larger suspended particles - answer B. To filter out
suspended particles
What is the main purpose of a water treatment plant's intake structure?
A. To draw in water while preventing leaves and other debris from
clogging or damaging pumps
B. To ensure fish passage without undue harm to the fishery.
C. To provide a structure for housing the low head influent pumps.
D. To take in excess water from the raw water source - answer A. To draw
in water while preventing leaves and other debris from clogging or
damaging pumps
Smaller sized particles, such as bacteria and fine clays and silts, readily
settle out of water
True
False - answer False
Overdosing as well as underdosing of coagulants may lead to reduced
solids removal efficiency.
True
False - answer True
The maximum allowable level of turbidity in water is 0.5 NTU with a
recommended level of 0.1 NTU
True
False - answer True
Practice Exam (OHIO Class 1)
questions with complete verified
solutions (graded A+)
Many sources of water are directly suitable for drinking purposes without
treatment
True
False - answer False
Water treatment plant operators have the responsibility for the health and
well-being of the community they serve.
True
False - answer True
What is the purpose of coagulation-flocculation?
A. To control corrosion
B. To filter out suspended particles
C. To gather together fine, light particles to form floc to aid the
sedimentation and filtration processes.
D. To settle out larger suspended particles - answer C. To gather together
fine, light particles to form floc to aid the sedimentation and filtration
processes.
What is the purpose of filtration?
A. To control corrosion
, B. To filter out suspended particles
C. To gather together fine, light particles to form floc to aid the
sedimentation and filtration processes.
D. To settle out larger suspended particles - answer B. To filter out
suspended particles
What is the main purpose of a water treatment plant's intake structure?
A. To draw in water while preventing leaves and other debris from
clogging or damaging pumps
B. To ensure fish passage without undue harm to the fishery.
C. To provide a structure for housing the low head influent pumps.
D. To take in excess water from the raw water source - answer A. To draw
in water while preventing leaves and other debris from clogging or
damaging pumps
Smaller sized particles, such as bacteria and fine clays and silts, readily
settle out of water
True
False - answer False
Overdosing as well as underdosing of coagulants may lead to reduced
solids removal efficiency.
True
False - answer True
The maximum allowable level of turbidity in water is 0.5 NTU with a
recommended level of 0.1 NTU
True
False - answer True
