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CCSD Res 125 Week 1 Test

Enter the letter for the matching Answer
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1.
Which of the following statements about CO2 is FALSE? A) It does not support animal life. B) It is a flammable gas. C) It is odorless and colorless. D) It is heavier than air.
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2.
During inspection of the shoulder of a compressed gas cylinder, you note a plus sign (+) next to the test date. This indicates what about the cylinder?
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3.
Department of Transportation (DOT) regulations require compressed gas cylinders to be hydrostatically tested for leaks and expansion every how often? A) 1 to 2 years B) 3 to 5 years C) 6 to 8 years D) 5 or 10 years
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4.
The gauge on an E cylinder of O2 reads 800 psig. About how long would the contents of this cylinder last, until completely empty, at a flow of 3 L/min? A) 1 hour 15 minutes B) 1 hour 45 minutes C) 2 hours 10 minutes D) 2 hours 40 minutes
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5.
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
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6.
The gauge on an H cylinder of O2 reads 2000 psig. About how long would the contents of this cylinder last, until completely empty, at a flow of 6 L/min? A) 1 hour 30 minutes B) 17 hours 30 minutes C) 18 hours 10 minutes D) 21 hours 50 minutes
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7.
In clinical practice, how is a positive identification made of the contents of a medical gas cylinder? A) noting the color of the cylinder B) inspecting the cylinder threads C) reading the cylinder label D) collecting and analyzing a gas sample
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8.
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.
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9.
The measured pressure in a liquid-filled cylinder is equivalent to which of the following?
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10.
Which of the following mechanisms do all compressed gas cylinders use to avoid excessively high buildup of cylinder pressure?
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11.
What is the usual method of monitoring the remaining contents in a gas-filled cylinder? A) Weigh the cylinder. B) Read the pressure gauge. C) Compute the gas density. D) Read the cylinder label.
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12.
Which of the following statements regarding O2 is false? A) It is only slightly soluble in water. B) It is odorless and transparent. C) It is flammable. D) It is heavier than air.
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13.
Which of the following medical gases support combustion? I. O2 II. N2O III. compressed air IV. CO2 A) I and IV B) II and III C) I, II, and III D) I, III, and IV
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14.
The measured pressure in a gas-filled cylinder is equivalent to which of the following?
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15.
By what means is oxygen for medical use in a hospital most commonly produced? A) chemical decomposition B) electrolysis C) fractional distillation D) physical separation
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16.
Air for medical use in a hospital should be which of the following? I. particle-free II. oil-free III. dry A) I and II B) I and III C) II and III D) I, II, and III
A.
B) Read the pressure gauge.
B.
pressure-relief mechanism on the valve stem
C.
A) 1 hour 15 minutes
D.
C) It is flammable.
E.
D) It is heavier than air.
F.
B) 17 hours 30 minutes
G.
the force required to compress its volume within the cylinder
H.
B) fractional distillation of air
I.
It can be filled to 10% above its service pressure.
J.
the pressure of the surface vapor at any given temperature
K.
D) I, II, and III
L.
D) 5 or 10 years
M.
B) It is a flammable gas.
N.
C) fractional distillation
O.
C) I, II, and III
P.
C) reading the cylinder label
Type the Answer that corresponds to the displayed Question.
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17.
Which of the following gases is used to treat conditions causing hypoxic respiratory failure? A) N2O B) He C) NO D) cyclopropane
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18.
What cylinder factor is used to compute the duration of flow for a 244 cu/ft (H/K) O2 or air cylinder? A) 0.16 B) 0.28 C) 3.14 D) 2.41
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19.
What key property of He makes it useful as a therapeutic gas? A) low solubility B) chemical inertness C) low cost D) low density
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20.
According to the National Institute of Standards and Technology of the U.S. Department of Commerce, a gas cylinder that is color-coded brown and green should contain which of the following? A) O2–N2 mixture B) O2–CO2 mixture C) CO2 D) O2–He mixture
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21.
What cylinder factor is used to compute the duration of flow for a 22 cu/ft O2 or air E cylinder? A) 0.28 B) 1.34 C) 2.41 D) 3.14
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22.
When full, a gas cylinder registers a pressure of 2200 psig. After a few hours of use, the pressure gauge reads 550 psig. The cylinder is now how full? A) one half B) one third C) one fourth D) two thirds
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23.
Which of the following methods of producing O2 is commonly used in the home care setting? A) chemical decomposition B) electrolysis C) fractional distillation D) physical separation
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24.
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
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25.
What is the U.S. Food and Drug Administration (FDA) purity standard for O2? A) 21% B) 90% C) 95% D) 99%

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