1|Page
NAUI Nitrox Diver Final Exam Brand New
Authentic Questions With Answers
What is the nitrogen partial pressure (PN2) in EAN35 at a depth of 26 msw (85
fsw)?-correct-answer-2.3 ata
What is the oxygen partial pressure (PO2) of EAN38 at 27 msw (87 fsw)?-correct-
answer-1.4 ata
At what depth in the ocean is the absolute pressure 6.4 ata?-correct-answer-54
msw (178 fsw)
If the PO2 at 30 msw (98 fsw) is 1.4 atmospheres, what is the oxygen fraction of
the breathing mixture?-correct-answer-0.35
What is the partial pressure of nitrogen in air at 40 msw (130 fsw)?-correct-
answer-3.9 ata
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True or False. Narcosis is reduced significantly when diving with enriched air
nitrox.-correct-answer-False
The mechanisms of nitrogen narcosis are thought to be similar to:-correct-
answer-Anesthesia
Oxygen is used by the body in:-correct-answer-Metabolism
The term used for low oxygen in the body is:-correct-answer-Hypoxia
Breathing high partial pressures of oxygen can cause:-correct-answer-Convulsions
The accepted oxygen partial pressure exposure limit for recreational nitrox diving
is:-correct-answer-1.4 ata
At the first signs or symptoms of oxygen toxicity, a diver should:-correct-answer-
Terminate the dive.
NAUI Nitrox Diver Final Exam Brand New
Authentic Questions With Answers
What is the nitrogen partial pressure (PN2) in EAN35 at a depth of 26 msw (85
fsw)?-correct-answer-2.3 ata
What is the oxygen partial pressure (PO2) of EAN38 at 27 msw (87 fsw)?-correct-
answer-1.4 ata
At what depth in the ocean is the absolute pressure 6.4 ata?-correct-answer-54
msw (178 fsw)
If the PO2 at 30 msw (98 fsw) is 1.4 atmospheres, what is the oxygen fraction of
the breathing mixture?-correct-answer-0.35
What is the partial pressure of nitrogen in air at 40 msw (130 fsw)?-correct-
answer-3.9 ata
, 2|Page
True or False. Narcosis is reduced significantly when diving with enriched air
nitrox.-correct-answer-False
The mechanisms of nitrogen narcosis are thought to be similar to:-correct-
answer-Anesthesia
Oxygen is used by the body in:-correct-answer-Metabolism
The term used for low oxygen in the body is:-correct-answer-Hypoxia
Breathing high partial pressures of oxygen can cause:-correct-answer-Convulsions
The accepted oxygen partial pressure exposure limit for recreational nitrox diving
is:-correct-answer-1.4 ata
At the first signs or symptoms of oxygen toxicity, a diver should:-correct-answer-
Terminate the dive.
