Drinking Water Treatment Practice Exam (OHIO Class 1) Questions With Complete Solutions
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
, Drinking Water Treatment Practice Exam (OHIO Class 1) Questions With Complete Solutions
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
What is alkalinity?
A. A laboratory procedure used to estimate the minimum or ideal coagulant dose required to achieve
certain water quality goals.
B. A process used to kill disease-causing organisms
C. A solution or liquid whose chemical make-up neutralizes acids or bases without a great change in pH
D. The capacity of water to neutralize acids. - (ANSWER)D. The capacity of water to neutralize acids.
What is the usual culprit when there are sudden increases in filtered water turbidity
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
, Drinking Water Treatment Practice Exam (OHIO Class 1) Questions With Complete Solutions
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
What is alkalinity?
A. A laboratory procedure used to estimate the minimum or ideal coagulant dose required to achieve
certain water quality goals.
B. A process used to kill disease-causing organisms
C. A solution or liquid whose chemical make-up neutralizes acids or bases without a great change in pH
D. The capacity of water to neutralize acids. - (ANSWER)D. The capacity of water to neutralize acids.
What is the usual culprit when there are sudden increases in filtered water turbidity
