Med Gas Exam Questions With All
Correct Answers <Verified Answers>
2025 Marking Scheme New Update
/. A local alarm shall activate alarm panels when the dew point on instrument air
systems pressure exceeds ______________ indicating high dew point. - Answer-✅-22°
F
/.Each brazed joint shall be - Answer-✅visually examined after the cleaning of the
outside of the joint
/.Medical air central supply systems shall include air dryer(s) that maintains a maximum
dew point of _________ to 50-55 psi at any level of demand. - Answer-✅32° F
/.Instrument air shall be dry to a dew point of - Answer-✅-40° F
/.A building or portion thereof used to provide services or treatment simultaneously to
four or more patients on an outpatient basis, where the patients are incapable of taking
action for self-preservation under emergency conditions without the assistance of others
is a - Answer-✅ambulatory health care center
/.During the outlet flow test, nitrogen outlets shall deliver __________ SCFM with a
pressure drop of no more than 5 psi gage and a static pressure of 160 - 180 psi. -
Answer-✅5.0
/.The reserve supply manifold of high pressure cylinders shall consist of ____________
connections. - Answer-✅three or more
/.Piping underground within buildings or embedded in concrete floors or walls shall be
installed in a - Answer-✅continuous conduit
/.A building or portion of a building used on a 24 hour basis for the housing of four or
more persons who because of mental or physical incapacity, might be unable to provide
for their own needs and safety without the assistance of another person, is a - Answer-
✅nursing home
, /.For each positive-pressure gas system, the cleanliness of the piping system shall be
verified by a piping particulate test. The gas shall be filtered and shall accrue no more
than __________ of matter from any outlet tested. - Answer-✅1mg
/.A unit of pressure measurement with zero pressure as the base or reference pressure
- Answer-✅PSIA
/.A building or portion of a building used for minor treatments under the continuous
supervision of a dental professional and no overnight stays for patients or no 24 hours
operations take place is a - Answer-✅Dental Office
/._________________________________ is an inorganic compound, that exists as a
gas at atmospheric pressure and temperature, possesses a _________________smell.
- Answer-✅Nitrous Oxide, Sweet
/.PVC dental vacuum piping shall be subjected to a vacuum test of not less than
________ in. gauge HgV. - Answer-✅12 in. Gauge HgV
/.Manufactured assemblies shall have a flame spread rating of not greater than -
Answer-✅200
/.Instrument air is designed to have an operating pressure of ____________________
psi gauge - Answer-✅160-185
/.Flexible connectors of other than all-metal construction that connect manifolds to the
gas distribution piping shall not exceed ______ feet in length and shall not penetrate
walls, floors, ceilings, or partitions. - Answer-✅5ft
/.Medical air compressors shall be sufficient to serve the peak calculated demand with
the ____________ single compressor out of service. But in no case shall there be fewer
than ______ compressors. - Answer-✅Largest, 2
/.The quality of medical air shall have less than ___________ PPM gaseous
hydrocarbons. - Answer-✅25
/.Medical air compressor central supply systems shall be equipped to ensure the
delivery of compressed air with a maximum allowable _________ oil. - Answer-✅o.oo
/.If WAGD is joined to vacuum piping, it shall be connected at a minimum distance of
_________ feet from any vacuum inlet. - Answer-✅5ft
/.The maximum support spacing for 2 ½" NPS plastic pipe is - Answer-✅5ft
Correct Answers <Verified Answers>
2025 Marking Scheme New Update
/. A local alarm shall activate alarm panels when the dew point on instrument air
systems pressure exceeds ______________ indicating high dew point. - Answer-✅-22°
F
/.Each brazed joint shall be - Answer-✅visually examined after the cleaning of the
outside of the joint
/.Medical air central supply systems shall include air dryer(s) that maintains a maximum
dew point of _________ to 50-55 psi at any level of demand. - Answer-✅32° F
/.Instrument air shall be dry to a dew point of - Answer-✅-40° F
/.A building or portion thereof used to provide services or treatment simultaneously to
four or more patients on an outpatient basis, where the patients are incapable of taking
action for self-preservation under emergency conditions without the assistance of others
is a - Answer-✅ambulatory health care center
/.During the outlet flow test, nitrogen outlets shall deliver __________ SCFM with a
pressure drop of no more than 5 psi gage and a static pressure of 160 - 180 psi. -
Answer-✅5.0
/.The reserve supply manifold of high pressure cylinders shall consist of ____________
connections. - Answer-✅three or more
/.Piping underground within buildings or embedded in concrete floors or walls shall be
installed in a - Answer-✅continuous conduit
/.A building or portion of a building used on a 24 hour basis for the housing of four or
more persons who because of mental or physical incapacity, might be unable to provide
for their own needs and safety without the assistance of another person, is a - Answer-
✅nursing home
, /.For each positive-pressure gas system, the cleanliness of the piping system shall be
verified by a piping particulate test. The gas shall be filtered and shall accrue no more
than __________ of matter from any outlet tested. - Answer-✅1mg
/.A unit of pressure measurement with zero pressure as the base or reference pressure
- Answer-✅PSIA
/.A building or portion of a building used for minor treatments under the continuous
supervision of a dental professional and no overnight stays for patients or no 24 hours
operations take place is a - Answer-✅Dental Office
/._________________________________ is an inorganic compound, that exists as a
gas at atmospheric pressure and temperature, possesses a _________________smell.
- Answer-✅Nitrous Oxide, Sweet
/.PVC dental vacuum piping shall be subjected to a vacuum test of not less than
________ in. gauge HgV. - Answer-✅12 in. Gauge HgV
/.Manufactured assemblies shall have a flame spread rating of not greater than -
Answer-✅200
/.Instrument air is designed to have an operating pressure of ____________________
psi gauge - Answer-✅160-185
/.Flexible connectors of other than all-metal construction that connect manifolds to the
gas distribution piping shall not exceed ______ feet in length and shall not penetrate
walls, floors, ceilings, or partitions. - Answer-✅5ft
/.Medical air compressors shall be sufficient to serve the peak calculated demand with
the ____________ single compressor out of service. But in no case shall there be fewer
than ______ compressors. - Answer-✅Largest, 2
/.The quality of medical air shall have less than ___________ PPM gaseous
hydrocarbons. - Answer-✅25
/.Medical air compressor central supply systems shall be equipped to ensure the
delivery of compressed air with a maximum allowable _________ oil. - Answer-✅o.oo
/.If WAGD is joined to vacuum piping, it shall be connected at a minimum distance of
_________ feet from any vacuum inlet. - Answer-✅5ft
/.The maximum support spacing for 2 ½" NPS plastic pipe is - Answer-✅5ft
