Journeyman and Master Plumbing Exam
Question Bank With 100% Correct
Answers 2025
What degree is used for isometric drawings? - correct answers ✔✔60 degrees
What is the recommended minimum of minutes for chlorine water management? - correct answers
✔✔20-30 minutes
When you need to repair a single handle lavatory faucet, what needs to be replaced? - correct answers
✔✔O ring
Galvanic corrosion of water supply piping can occur where - correct answers ✔✔steel pipe is joined to a
dissimilar metal pipe
Whenever necessary to make an inspection to enforce any of the provisions of the Code, an authorized
representative may enter the premises - correct answers ✔✔at all reasonable times
After completion of work and testing of sewer pipeline, who shall request inspection? - correct answers
✔✔Supervisor of job at job-site
If the Administrative Authority requests that a new type of material be used on a project, who pays for
the testing of the new material? - correct answers ✔✔Contractor
When plumbing work is inspected and a "notice of correction" is served, how many days does the
contractor have to correct the work? - correct answers ✔✔Within 10 days
What is the vertical distance called that is between the lowest opening of a pipe fixture or appurtenance
that is discharging waste to the overflow level of a fixture? - correct answers ✔✔Airgap, drainage
,A cleanout which has direct access without the necessity of removing any panel or door is defined to be -
correct answers ✔✔readily accessible
Distribution of water from any other source than intended is - correct answers ✔✔backflow
Back-siphonage is defined as - correct answers ✔✔the flowing back of used, contaminated or polluted
water from a plumbing fixture or vessel into a water supply pipe due to a negative pressure in such pipe
The _________________________ is the pipe which carries potable water from a water meter to a
building. - correct answers ✔✔building supply
Backflow is defined as - correct answers ✔✔non-potable water or other liquids entering a potable water
system
Any group of two or more similar adjacent fixtures that discharge into a common horizontal waste
branch is defined as a - correct answers ✔✔battery
Which of the following connects one or more individual vents to a vent stack? - correct answers
✔✔Branch vent
A combination waste and vent system may be installed on a _______________________ piping system. -
correct answers ✔✔horizontal
The minimum level at which a vacuum breaker may be installed above the flood level rim of the device
and service is called - correct answers ✔✔the critical level
The "the critical level" is shown on a backflow prevention device by a _______________ marking. -
correct answers ✔✔C-L or C/L
When a backflow prevention device does not bear a "critical level" marking, which part of the device
constitutes the critical level? - correct answers ✔✔Bottom
, What is the Critical Level on a backflow device? - correct answers ✔✔Bottom
According to the Uniform Plumbing Code, a "cross connection" is defined as - correct answers ✔✔a
connection through which non-potable water may enter a potable water system.
What is the name for the measurement taken along the centerline of a pipe and fittings? - correct
answers ✔✔Developed length
"Existing work" is defined to be a plumbing system or any part thereof which - correct answers ✔✔has
been installed prior to the effective date of the code.
A pipe which makes an angle of not more than 45 degrees with the horizontal is considered - correct
answers ✔✔horizontal
A horizontal pipe is any pipe or fitting which is installed in a horizontal position or which makes an angle
of less than _________ degrees with the horizontal. - correct answers ✔✔45
What statement is true about industrial waste? - correct answers ✔✔It is free of fecal matter.
The "invert" elevation of a sewer line is the ____________________ of the pipe. - correct answers
✔✔inside bottom
Water which is satisfactory for drinking, culinary and domestic purposes and meets the requirements of
the health authority having jurisdiction is defined as _____________________ water. - correct answers
✔✔potable
Refer to the illustration above. This is a multi-story installation. There is a sink draining into the pipe
above "A". What is the name for the pipe at "A"? - correct answers ✔✔soil stack
With an on-demand water heater, no relief is required if the maximum inside heater is - correct answers
✔✔3 "
Question Bank With 100% Correct
Answers 2025
What degree is used for isometric drawings? - correct answers ✔✔60 degrees
What is the recommended minimum of minutes for chlorine water management? - correct answers
✔✔20-30 minutes
When you need to repair a single handle lavatory faucet, what needs to be replaced? - correct answers
✔✔O ring
Galvanic corrosion of water supply piping can occur where - correct answers ✔✔steel pipe is joined to a
dissimilar metal pipe
Whenever necessary to make an inspection to enforce any of the provisions of the Code, an authorized
representative may enter the premises - correct answers ✔✔at all reasonable times
After completion of work and testing of sewer pipeline, who shall request inspection? - correct answers
✔✔Supervisor of job at job-site
If the Administrative Authority requests that a new type of material be used on a project, who pays for
the testing of the new material? - correct answers ✔✔Contractor
When plumbing work is inspected and a "notice of correction" is served, how many days does the
contractor have to correct the work? - correct answers ✔✔Within 10 days
What is the vertical distance called that is between the lowest opening of a pipe fixture or appurtenance
that is discharging waste to the overflow level of a fixture? - correct answers ✔✔Airgap, drainage
,A cleanout which has direct access without the necessity of removing any panel or door is defined to be -
correct answers ✔✔readily accessible
Distribution of water from any other source than intended is - correct answers ✔✔backflow
Back-siphonage is defined as - correct answers ✔✔the flowing back of used, contaminated or polluted
water from a plumbing fixture or vessel into a water supply pipe due to a negative pressure in such pipe
The _________________________ is the pipe which carries potable water from a water meter to a
building. - correct answers ✔✔building supply
Backflow is defined as - correct answers ✔✔non-potable water or other liquids entering a potable water
system
Any group of two or more similar adjacent fixtures that discharge into a common horizontal waste
branch is defined as a - correct answers ✔✔battery
Which of the following connects one or more individual vents to a vent stack? - correct answers
✔✔Branch vent
A combination waste and vent system may be installed on a _______________________ piping system. -
correct answers ✔✔horizontal
The minimum level at which a vacuum breaker may be installed above the flood level rim of the device
and service is called - correct answers ✔✔the critical level
The "the critical level" is shown on a backflow prevention device by a _______________ marking. -
correct answers ✔✔C-L or C/L
When a backflow prevention device does not bear a "critical level" marking, which part of the device
constitutes the critical level? - correct answers ✔✔Bottom
, What is the Critical Level on a backflow device? - correct answers ✔✔Bottom
According to the Uniform Plumbing Code, a "cross connection" is defined as - correct answers ✔✔a
connection through which non-potable water may enter a potable water system.
What is the name for the measurement taken along the centerline of a pipe and fittings? - correct
answers ✔✔Developed length
"Existing work" is defined to be a plumbing system or any part thereof which - correct answers ✔✔has
been installed prior to the effective date of the code.
A pipe which makes an angle of not more than 45 degrees with the horizontal is considered - correct
answers ✔✔horizontal
A horizontal pipe is any pipe or fitting which is installed in a horizontal position or which makes an angle
of less than _________ degrees with the horizontal. - correct answers ✔✔45
What statement is true about industrial waste? - correct answers ✔✔It is free of fecal matter.
The "invert" elevation of a sewer line is the ____________________ of the pipe. - correct answers
✔✔inside bottom
Water which is satisfactory for drinking, culinary and domestic purposes and meets the requirements of
the health authority having jurisdiction is defined as _____________________ water. - correct answers
✔✔potable
Refer to the illustration above. This is a multi-story installation. There is a sink draining into the pipe
above "A". What is the name for the pipe at "A"? - correct answers ✔✔soil stack
With an on-demand water heater, no relief is required if the maximum inside heater is - correct answers
✔✔3 "
