Wastewater Treatment Operator Certification Test #4
Questions With Complete Solutions
1 mg/l is the same as 1 part per billion (ppb)
True or False Correct Answers False (v.1 pg 468)
A Discharge Monitoring Report is typically submitted to the
regulatory agency on a daily basis
True or False Correct Answers False
A facultative bacteria is capable of living under an aerobic
condition, but not in an anaerobic condition.
True or False Correct Answers False (v.2 pg 826)
A manhole, sump, or vault, can be entered without the following
confined space entry procedures if it appears safe.
True or False Correct Answers False (v.2 pg 271)
A mechanical seal is used to prevent leaks between the pump
casing and shaft.
True or False Correct Answers True (v.2 pg 356)
A SCADA system is capable of monitoring and controlling
equipment from a remote location
True or False Correct Answers True (v.2 pg 627)
,A slight seal leakage should be observed when a pump is
operating to keep the packings cool.
True or False Correct Answers True (v.2 pg 414)
Abnormal operation in a pond will not occur if it is overloaded
with BOD.
True or False Correct Answers False (v.1 pg 307)
Algae growth will be faster when there is less sunlight.
True or False Correct Answers False (v.1 pg 309)
Algae is not essential to the successful operation of both aerobic
and facultative ponds.
True or False Correct Answers False (v.1 pg 299)
Alkalinity is the capacity of a liquid to neutralize a base.
True or False Correct Answers False (v.2 pg 813)
Always pour water into acid, and never the other way around.
True or False Correct Answers False (v.2 pg 302)
An impeller is an important part of a centrifugal pump that spins
the liquid at high speed.
, True or False Correct Answers True (v.2 pg 339)
An increase in the volatile acids/alkalinity ratio in an anaerobic
digester indicates that a problem is developing.
True or False Correct Answers True (v.2 pg 191)
Anaerobic decomposition of sewage will release hydrogen
sulfide.
True or False Correct Answers True (v.1 pg 20)
Chain driven scrappers called flights are commonly used as
mechanical grit collectors.
True or False Correct Answers True (v.1 pg 87)
Chlorine gas in not flammable.
True or False Correct Answers True (v.2 pg 268)
Chlorine gas is brown in color.
True or False Correct Answers False (v.2 pg 268)
Class A fire extinguisher should be used for an electrical fire.
True or False Correct Answers False (v.2 pg 496)
Free chlorine combines with water to form hypochlorous and
hydorchloric acids.
Questions With Complete Solutions
1 mg/l is the same as 1 part per billion (ppb)
True or False Correct Answers False (v.1 pg 468)
A Discharge Monitoring Report is typically submitted to the
regulatory agency on a daily basis
True or False Correct Answers False
A facultative bacteria is capable of living under an aerobic
condition, but not in an anaerobic condition.
True or False Correct Answers False (v.2 pg 826)
A manhole, sump, or vault, can be entered without the following
confined space entry procedures if it appears safe.
True or False Correct Answers False (v.2 pg 271)
A mechanical seal is used to prevent leaks between the pump
casing and shaft.
True or False Correct Answers True (v.2 pg 356)
A SCADA system is capable of monitoring and controlling
equipment from a remote location
True or False Correct Answers True (v.2 pg 627)
,A slight seal leakage should be observed when a pump is
operating to keep the packings cool.
True or False Correct Answers True (v.2 pg 414)
Abnormal operation in a pond will not occur if it is overloaded
with BOD.
True or False Correct Answers False (v.1 pg 307)
Algae growth will be faster when there is less sunlight.
True or False Correct Answers False (v.1 pg 309)
Algae is not essential to the successful operation of both aerobic
and facultative ponds.
True or False Correct Answers False (v.1 pg 299)
Alkalinity is the capacity of a liquid to neutralize a base.
True or False Correct Answers False (v.2 pg 813)
Always pour water into acid, and never the other way around.
True or False Correct Answers False (v.2 pg 302)
An impeller is an important part of a centrifugal pump that spins
the liquid at high speed.
, True or False Correct Answers True (v.2 pg 339)
An increase in the volatile acids/alkalinity ratio in an anaerobic
digester indicates that a problem is developing.
True or False Correct Answers True (v.2 pg 191)
Anaerobic decomposition of sewage will release hydrogen
sulfide.
True or False Correct Answers True (v.1 pg 20)
Chain driven scrappers called flights are commonly used as
mechanical grit collectors.
True or False Correct Answers True (v.1 pg 87)
Chlorine gas in not flammable.
True or False Correct Answers True (v.2 pg 268)
Chlorine gas is brown in color.
True or False Correct Answers False (v.2 pg 268)
Class A fire extinguisher should be used for an electrical fire.
True or False Correct Answers False (v.2 pg 496)
Free chlorine combines with water to form hypochlorous and
hydorchloric acids.
