Physical Chemical Operator SC - study set
C & D Exam (2026/2027) Questions and
Verified Answers, 100% Guarantee Pass
Always _____ a piece of equipment before attempting a repair - CORRECT ANSWER -
Lockout/Tagout
Before entering a confined space, you should check for oxygen levels no less than _ or greater
than _. - CORRECT ANSWER -19.5% & 23.5%
The greatest hazard with the generation and handling of carbon dioxide is __. - CORRECT
ANSWER -Asphyxiation
The most hazardous condition associated with storage areas, slurry tanks, or other confined
spaces where activated carbon is present is ---- - CORRECT ANSWER -Depletion of oxygen
Ventilation or a blower should be placed at least __ feet from manhole and at a ___ angle to the
wind direction to allow communication and prevent contaminants entering the manhole -
CORRECT ANSWER -6 feet, right angle
___and ___ should be located in an easily accessible place known to all employees - CORRECT
ANSWER -Fire extinguishers, first aid kits
A pipet with TD printed on it means ''____" - CORRECT ANSWER -To deliver
The jar test is used to establish optimum dosage in the ___ process - CORRECT ANSWER -
coagulation/flocculation
,Three waterborne diseases are ____ - CORRECT ANSWER -typhoid fever, dysentery and
cholera
____ are the most frequent injuries occurring in water operations - CORRECT ANSWER -
Strains and Sprains
Methane gas is dangerous because it is ____ - CORRECT ANSWER -explosive
___ amperes of electricity is sufficient to injure or kill a person - CORRECT ANSWER -1/3
amps
The most reliable backflow preventor is the ___ - CORRECT ANSWER -Air Gap
The ____ device is the most reliable backflow if an air gap is not in
place - CORRECT ANSWER -RP (Reduced Pressure)
Public health is the primary concern regarding ___ - CORRECT ANSWER -effluent disposal
First aid for first degree bums would be to ____ - CORRECT ANSWER -immediately submerge
burn in cold water
The purpose of a backflow preventer is to ___ - CORRECT ANSWER -prevent contamination of
a water supply
___ is very effective in cleaning up a polymer spill - CORRECT ANSWER -Salt
An example of a Class A fire would be: - CORRECT ANSWER -wood burning
An example of a Class B fire would be: - CORRECT ANSWER -Chemical Burning
, An example of a Class C fire would be: - CORRECT ANSWER -Electrical Fire
An example of a Class D fire would be: - CORRECT ANSWER -Flammable Metals
Slipping is a hazard associated with a ___ spill - CORRECT ANSWER -polymer
The problems encountered while working around chlorine is that chlorine is ___ - CORRECT
ANSWER -very corrosive, toxic and aggressive
Always store incompatible chemicals ___. - CORRECT ANSWER -apart from each other
Flush eyes or skin for at least ___ if chlorine gets in your eyes or on your skin - CORRECT
ANSWER -15 minutes
___ hours of continuing education is required every two years to maintain a certification -
CORRECT ANSWER -12 hours
___ is the agency responsible for enforcement of regulations for water plants in the State of SC -
CORRECT ANSWER -SCDHEC
The Municipality issues ____ for industries that discharge to a treatment plant - CORRECT
ANSWER -pretreatment permits
The____ can revoke or suspend an operators certification for certain infractions of the
regulations - CORRECT ANSWER -ECB (Environmental Control Board)
Use the facility ___ to troubleshoot operational problems at the treatment plant - CORRECT
ANSWER -O & M manual
C & D Exam (2026/2027) Questions and
Verified Answers, 100% Guarantee Pass
Always _____ a piece of equipment before attempting a repair - CORRECT ANSWER -
Lockout/Tagout
Before entering a confined space, you should check for oxygen levels no less than _ or greater
than _. - CORRECT ANSWER -19.5% & 23.5%
The greatest hazard with the generation and handling of carbon dioxide is __. - CORRECT
ANSWER -Asphyxiation
The most hazardous condition associated with storage areas, slurry tanks, or other confined
spaces where activated carbon is present is ---- - CORRECT ANSWER -Depletion of oxygen
Ventilation or a blower should be placed at least __ feet from manhole and at a ___ angle to the
wind direction to allow communication and prevent contaminants entering the manhole -
CORRECT ANSWER -6 feet, right angle
___and ___ should be located in an easily accessible place known to all employees - CORRECT
ANSWER -Fire extinguishers, first aid kits
A pipet with TD printed on it means ''____" - CORRECT ANSWER -To deliver
The jar test is used to establish optimum dosage in the ___ process - CORRECT ANSWER -
coagulation/flocculation
,Three waterborne diseases are ____ - CORRECT ANSWER -typhoid fever, dysentery and
cholera
____ are the most frequent injuries occurring in water operations - CORRECT ANSWER -
Strains and Sprains
Methane gas is dangerous because it is ____ - CORRECT ANSWER -explosive
___ amperes of electricity is sufficient to injure or kill a person - CORRECT ANSWER -1/3
amps
The most reliable backflow preventor is the ___ - CORRECT ANSWER -Air Gap
The ____ device is the most reliable backflow if an air gap is not in
place - CORRECT ANSWER -RP (Reduced Pressure)
Public health is the primary concern regarding ___ - CORRECT ANSWER -effluent disposal
First aid for first degree bums would be to ____ - CORRECT ANSWER -immediately submerge
burn in cold water
The purpose of a backflow preventer is to ___ - CORRECT ANSWER -prevent contamination of
a water supply
___ is very effective in cleaning up a polymer spill - CORRECT ANSWER -Salt
An example of a Class A fire would be: - CORRECT ANSWER -wood burning
An example of a Class B fire would be: - CORRECT ANSWER -Chemical Burning
, An example of a Class C fire would be: - CORRECT ANSWER -Electrical Fire
An example of a Class D fire would be: - CORRECT ANSWER -Flammable Metals
Slipping is a hazard associated with a ___ spill - CORRECT ANSWER -polymer
The problems encountered while working around chlorine is that chlorine is ___ - CORRECT
ANSWER -very corrosive, toxic and aggressive
Always store incompatible chemicals ___. - CORRECT ANSWER -apart from each other
Flush eyes or skin for at least ___ if chlorine gets in your eyes or on your skin - CORRECT
ANSWER -15 minutes
___ hours of continuing education is required every two years to maintain a certification -
CORRECT ANSWER -12 hours
___ is the agency responsible for enforcement of regulations for water plants in the State of SC -
CORRECT ANSWER -SCDHEC
The Municipality issues ____ for industries that discharge to a treatment plant - CORRECT
ANSWER -pretreatment permits
The____ can revoke or suspend an operators certification for certain infractions of the
regulations - CORRECT ANSWER -ECB (Environmental Control Board)
Use the facility ___ to troubleshoot operational problems at the treatment plant - CORRECT
ANSWER -O & M manual
