WASTEWATER GRADE 1 PROCTORED EXAMS
QUESTIONS AND ANSWERS 2026 WITH
COMPLETE AND VERIFIED SOLUTIONS
EVERYTHING YOU NEED
◉Wet weather can cause hydraulic overloading of a wastewater
treatment plant. Answer: True
◉There is no distinction between the terms "wastewater disposal" and
"wastewater treatment" because both terms have the same meaning.
Answer: False
◉The common unit of power or rate of doing work is horsepower. This
is equal to 746 ft-lbs/min. Answer: False
◉Generally sulfide odors are not produced under aerobic conditions
Answer: True
◉Dissolved oxygen in wastewater may be referred to as free or
molecular oxygen, or usually as DO. Answer: True
,◉Gas bubbles rising to the surface in a primary clarifier are normally an
indication that the sludge in the unit is undergoing proper settling.
Answer: False
◉Wastewater with a pH of 2.0 to 4.0 could be too "basic" for biological
treatment. Answer: False
◉Most of the colloidal and dissolved matter in wastewater will be
removed in the primary clarifiers for the average well-designed,
efficiently operated wastewater treatment facility. Answer: False
◉Hydrogen sulfide, in addition to creating an odor nuisance, can be an
explosion hazard when mixed with air in certain concentrations.
Answer: True
◉Prior to working in a drained anaerobic digester, confined space entry
permits must be prepared. Answer: True
◉Excessive vibration in pumps and blowers can indicate potential
bearing failure. Answer: True
◉Washing of concrete and metal surfaces exposed to splashing from
wastewater is performed to reduce odors and corrosion. Answer: True
, ◉"Pond treatment" means processing in a pond in which biological
oxidation of organic
matter is effected by natural or artificially accelerated transfer of oxygen
to the water. Answer: True
◉To qualify for the Grade I Operator exam, a candidate must have a
college degree and one year of experience performing the functions of a
wastewater treatment plant operator. Answer: False
◉"Operator-in-training" means any person who operates a wastewater
treatment plant under the direct supervision of a certified operator while
gaining experience to qualify
for an operator certificate. Answer: True
◉A Venturi meter measures the amount of electricity used and should be
read when there is a high electrical demand. Answer: False
◉V-notch weirs allow more accurate
measurement of small flows than
broad-crested weirs. Answer: True
◉Doppler meters are used to measure the settling velocity of sludge in
gravity thickeners. Answer: False
QUESTIONS AND ANSWERS 2026 WITH
COMPLETE AND VERIFIED SOLUTIONS
EVERYTHING YOU NEED
◉Wet weather can cause hydraulic overloading of a wastewater
treatment plant. Answer: True
◉There is no distinction between the terms "wastewater disposal" and
"wastewater treatment" because both terms have the same meaning.
Answer: False
◉The common unit of power or rate of doing work is horsepower. This
is equal to 746 ft-lbs/min. Answer: False
◉Generally sulfide odors are not produced under aerobic conditions
Answer: True
◉Dissolved oxygen in wastewater may be referred to as free or
molecular oxygen, or usually as DO. Answer: True
,◉Gas bubbles rising to the surface in a primary clarifier are normally an
indication that the sludge in the unit is undergoing proper settling.
Answer: False
◉Wastewater with a pH of 2.0 to 4.0 could be too "basic" for biological
treatment. Answer: False
◉Most of the colloidal and dissolved matter in wastewater will be
removed in the primary clarifiers for the average well-designed,
efficiently operated wastewater treatment facility. Answer: False
◉Hydrogen sulfide, in addition to creating an odor nuisance, can be an
explosion hazard when mixed with air in certain concentrations.
Answer: True
◉Prior to working in a drained anaerobic digester, confined space entry
permits must be prepared. Answer: True
◉Excessive vibration in pumps and blowers can indicate potential
bearing failure. Answer: True
◉Washing of concrete and metal surfaces exposed to splashing from
wastewater is performed to reduce odors and corrosion. Answer: True
, ◉"Pond treatment" means processing in a pond in which biological
oxidation of organic
matter is effected by natural or artificially accelerated transfer of oxygen
to the water. Answer: True
◉To qualify for the Grade I Operator exam, a candidate must have a
college degree and one year of experience performing the functions of a
wastewater treatment plant operator. Answer: False
◉"Operator-in-training" means any person who operates a wastewater
treatment plant under the direct supervision of a certified operator while
gaining experience to qualify
for an operator certificate. Answer: True
◉A Venturi meter measures the amount of electricity used and should be
read when there is a high electrical demand. Answer: False
◉V-notch weirs allow more accurate
measurement of small flows than
broad-crested weirs. Answer: True
◉Doppler meters are used to measure the settling velocity of sludge in
gravity thickeners. Answer: False
