Egans Ch 40/41 Storage and Delivery of
Medical Gas Exam Questions and
Answers 2026/2027 A+ Graded 100%
Verified
Which of the following are considered therapeutic gases?
1. Oxygen (O2)
2. O2-NO mixture
3. O2-He mixture
4. N2O
A) 1 and 2 only
B) 2 and 4 only
C) 3 and 4 only
D) 1, 2, and 3 only - ANS -D) 1, 2, and 3 only
Which of the following statements regarding O2 are true?
1. It is only slightly soluble in water.
2. It is odorless and transparent.
3. It is flammable.
4. It is heavier than air.
A) 1 and 3 only
B) 1, 2, and 4 only
C) 3 and 4 only
D) 1, 2, 3 only - ANS -B) 1, 2, and 4 only
What is the most common and least expensive method for commercial production of O2?
A) Electrolysis of water
B) Fractional distillation of air
C) Physical separation by molecular sieves
D) Chemical decomposition of sodium chlorate - ANS -B) Fractional distillation of air
Which of the following statements about He is false?
A) It is an inert gas.
B) It is odorless.
C) It is nonflammable.
,D) It is heavier than air. - ANS -D) It is heavier than air.
Compressed gas cylinders are manufactured from which of the following?
A) Copper
B) Seamless steel
C) Seamless brass
D) Fiberglass - ANS -B) Seamless steel
According to the U.S. Department of Commerce, a gas cylinder that is color coded blue
should contain which of the following?
A) Air
B) He
C) N2O
D) O2 - ANS -C) N2O
What is the key difference between small compressed gas cylinders (sizes AA to E) and
their larger counterparts (sizes F to K)?
A) Small gas cylinders do not undergo regular DOT testing.
B) Small gas cylinders are always filled to lower pressures.
C) Small gas cylinders cannot be used for anesthetic gases.
D) Small gas cylinders use a yoke (not threaded) connector. - ANS -D) Small gas
cylinders use a yoke (not threaded) connector.
Cylinders of liquid gases are filled according to what specification?
A) Filling density
B) Critical weight
C) Elastic expansion
D) Filling pressure - ANS -A) Filling density
When using a Bourdon gauge against high outflow resistance, what will the flowmeter
reading show?
A) Exceed actual flow
B) Be less than actual flow
C) Equal actual flow
D) Equal 50 psig - ANS -A) Exceed actual flow
The gauge on an H cylinder of O2 reads 2000 psig. Approximately how long would the
contents of this cylinder last, until completely empty, at a flow of 6 L/min?
A) 1 hr 30 min
B) 17 hr 30 min
C) 18 hr 10 min
D) 21 hr 50 min - ANS -B) 17 hr 30 min
, You are planning a patient transport that will take approximately 1 hr. The patient
requires manual ventilation with 10 L/min of O2. What is the minimum number of full E
cylinders you would take with you?
A) 2
B) 3
C) 4
D) 5 - ANS -A) 2
Which of the following components are common to a standard compressed gas cylinder
manifold system?
1. Automatic switch-over control
2. Pressure-reducing valves
3. Primary and reserve bank
4. Alarm system
A) 1, 2, and 3 only
B) 2 and 4 only
C) 3 and 4 only
D) 1, 2, 3, and 4 - ANS -D) 1, 2, 3, and 4
The NFPA standard for bulk liquid O2 systems requires that the reserve supply be which
of the following?
A) Fixed cylinder bank of 75 H cylinders
B) At least one large liquid O2 cylinder
C) Equal to the average gas use of 1 day
D) At least 3000 cu/ft of gaseous O2 - ANS -C) Equal to the average gas use of 1 day
Why are zone valves incorporated into a hospital's central gas piping systems?
1. To terminate O2 delivery to an area in case of fire
2. To allow selective maintenance without shutting the system down
3. To allow variable pressure reduction throughout the system
A) 1 and 2 only
B) 1 and 3 only
C) 2 and 3 only
D) 1, 2, and 3 - ANS -A) 1 and 2 only
You must connect a large-volume nebulizer to a bedside compressed-air outlet through a
flowmeter. You have only standard O2 flowmeters available. Which of the following
actions is appropriate?
A) Connect the O2 flowmeter to the air outlet with piping tape.
B) Use an O2-to-air DISS adapter to join the flowmeter and outlet.
C) Connect the O2 flowmeter to the air outlet with a petroleum jelly seal.
D) Try to cross-thread an O2 flowmeter directly on the air outlet. - ANS -B) Use an
O2-to-air DISS adapter to join the flowmeter and outlet.
Medical Gas Exam Questions and
Answers 2026/2027 A+ Graded 100%
Verified
Which of the following are considered therapeutic gases?
1. Oxygen (O2)
2. O2-NO mixture
3. O2-He mixture
4. N2O
A) 1 and 2 only
B) 2 and 4 only
C) 3 and 4 only
D) 1, 2, and 3 only - ANS -D) 1, 2, and 3 only
Which of the following statements regarding O2 are true?
1. It is only slightly soluble in water.
2. It is odorless and transparent.
3. It is flammable.
4. It is heavier than air.
A) 1 and 3 only
B) 1, 2, and 4 only
C) 3 and 4 only
D) 1, 2, 3 only - ANS -B) 1, 2, and 4 only
What is the most common and least expensive method for commercial production of O2?
A) Electrolysis of water
B) Fractional distillation of air
C) Physical separation by molecular sieves
D) Chemical decomposition of sodium chlorate - ANS -B) Fractional distillation of air
Which of the following statements about He is false?
A) It is an inert gas.
B) It is odorless.
C) It is nonflammable.
,D) It is heavier than air. - ANS -D) It is heavier than air.
Compressed gas cylinders are manufactured from which of the following?
A) Copper
B) Seamless steel
C) Seamless brass
D) Fiberglass - ANS -B) Seamless steel
According to the U.S. Department of Commerce, a gas cylinder that is color coded blue
should contain which of the following?
A) Air
B) He
C) N2O
D) O2 - ANS -C) N2O
What is the key difference between small compressed gas cylinders (sizes AA to E) and
their larger counterparts (sizes F to K)?
A) Small gas cylinders do not undergo regular DOT testing.
B) Small gas cylinders are always filled to lower pressures.
C) Small gas cylinders cannot be used for anesthetic gases.
D) Small gas cylinders use a yoke (not threaded) connector. - ANS -D) Small gas
cylinders use a yoke (not threaded) connector.
Cylinders of liquid gases are filled according to what specification?
A) Filling density
B) Critical weight
C) Elastic expansion
D) Filling pressure - ANS -A) Filling density
When using a Bourdon gauge against high outflow resistance, what will the flowmeter
reading show?
A) Exceed actual flow
B) Be less than actual flow
C) Equal actual flow
D) Equal 50 psig - ANS -A) Exceed actual flow
The gauge on an H cylinder of O2 reads 2000 psig. Approximately how long would the
contents of this cylinder last, until completely empty, at a flow of 6 L/min?
A) 1 hr 30 min
B) 17 hr 30 min
C) 18 hr 10 min
D) 21 hr 50 min - ANS -B) 17 hr 30 min
, You are planning a patient transport that will take approximately 1 hr. The patient
requires manual ventilation with 10 L/min of O2. What is the minimum number of full E
cylinders you would take with you?
A) 2
B) 3
C) 4
D) 5 - ANS -A) 2
Which of the following components are common to a standard compressed gas cylinder
manifold system?
1. Automatic switch-over control
2. Pressure-reducing valves
3. Primary and reserve bank
4. Alarm system
A) 1, 2, and 3 only
B) 2 and 4 only
C) 3 and 4 only
D) 1, 2, 3, and 4 - ANS -D) 1, 2, 3, and 4
The NFPA standard for bulk liquid O2 systems requires that the reserve supply be which
of the following?
A) Fixed cylinder bank of 75 H cylinders
B) At least one large liquid O2 cylinder
C) Equal to the average gas use of 1 day
D) At least 3000 cu/ft of gaseous O2 - ANS -C) Equal to the average gas use of 1 day
Why are zone valves incorporated into a hospital's central gas piping systems?
1. To terminate O2 delivery to an area in case of fire
2. To allow selective maintenance without shutting the system down
3. To allow variable pressure reduction throughout the system
A) 1 and 2 only
B) 1 and 3 only
C) 2 and 3 only
D) 1, 2, and 3 - ANS -A) 1 and 2 only
You must connect a large-volume nebulizer to a bedside compressed-air outlet through a
flowmeter. You have only standard O2 flowmeters available. Which of the following
actions is appropriate?
A) Connect the O2 flowmeter to the air outlet with piping tape.
B) Use an O2-to-air DISS adapter to join the flowmeter and outlet.
C) Connect the O2 flowmeter to the air outlet with a petroleum jelly seal.
D) Try to cross-thread an O2 flowmeter directly on the air outlet. - ANS -B) Use an
O2-to-air DISS adapter to join the flowmeter and outlet.
