NAUI Nitrox Diver Final Exam 85 REAL EXAM QUESTIONS
WITH 100% RATED CORRECT ANSWERS (ACCURATELY
PASSED) 2025 LATEST UPDATED GET A+
The main reason to dive with "nitrox" is to reduce exposure to some of the problems in diving
caused by: - (ANSWER)Nitrogen
We say that nitrogen is an inert gas. This means_____. - (ANSWER)Our bodies do not use the
nitrogen we breathe.
What is the primary safety hazard of breathing nitrogen at depth? - (ANSWER)Narcosis
NAUI sanctioned enriched air nitrox training in: - (ANSWER)1992
Benefits of nitrox include: - (ANSWER)Extended bottom time
Increased safety margins
Shorter surface intervals
The greatest advantages for diving using nitrox occur in what depth range? - (ANSWER)15- 33
msw (50-110 fsw)
True or False: A scuba diver breathing nitrox avoids any risk of nitrogen narcosis. -
(ANSWER)False
If a nitrox mix is 36% oxygen, what is the fraction of oxygen in the gas mix? - (ANSWER)0.36
_____ describes the relationship between absolute pressure and the volume of a gas. -
(ANSWER)Boyle's Law
, To find the partial pressure of a gas in a mixture: - (ANSWER)Multiply the gas fraction by the
absolute pressure.
The water pressure plus atmospheric pressure equals: - (ANSWER)Absolute pressure
What is the absolute pressure at 34 msw (111 fsw)? - (ANSWER)4.4 ata
What is the nitrogen partial pressure (PN2) in EAN35 at a depth of 26 msw (85 fsw)? -
(ANSWER)2.3 ata
What is the oxygen partial pressure (PO2) of EAN38 at 27 msw (87 fsw)? - (ANSWER)1.4 ata
At what depth in the ocean is the absolute pressure 6.4 ata? - (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? - (ANSWER)0.35
What is the partial pressure of nitrogen in air at 40 msw (130 fsw)? - (ANSWER)3.9 ata
True or False. Narcosis is reduced significantly when diving with enriched air nitrox. -
(ANSWER)False
The mechanisms of nitrogen narcosis are thought to be similar to: - (ANSWER)Anesthesia
Oxygen is used by the body in: - (ANSWER)Metabolism
The term used for low oxygen in the body is: - (ANSWER)Hypoxia
WITH 100% RATED CORRECT ANSWERS (ACCURATELY
PASSED) 2025 LATEST UPDATED GET A+
The main reason to dive with "nitrox" is to reduce exposure to some of the problems in diving
caused by: - (ANSWER)Nitrogen
We say that nitrogen is an inert gas. This means_____. - (ANSWER)Our bodies do not use the
nitrogen we breathe.
What is the primary safety hazard of breathing nitrogen at depth? - (ANSWER)Narcosis
NAUI sanctioned enriched air nitrox training in: - (ANSWER)1992
Benefits of nitrox include: - (ANSWER)Extended bottom time
Increased safety margins
Shorter surface intervals
The greatest advantages for diving using nitrox occur in what depth range? - (ANSWER)15- 33
msw (50-110 fsw)
True or False: A scuba diver breathing nitrox avoids any risk of nitrogen narcosis. -
(ANSWER)False
If a nitrox mix is 36% oxygen, what is the fraction of oxygen in the gas mix? - (ANSWER)0.36
_____ describes the relationship between absolute pressure and the volume of a gas. -
(ANSWER)Boyle's Law
, To find the partial pressure of a gas in a mixture: - (ANSWER)Multiply the gas fraction by the
absolute pressure.
The water pressure plus atmospheric pressure equals: - (ANSWER)Absolute pressure
What is the absolute pressure at 34 msw (111 fsw)? - (ANSWER)4.4 ata
What is the nitrogen partial pressure (PN2) in EAN35 at a depth of 26 msw (85 fsw)? -
(ANSWER)2.3 ata
What is the oxygen partial pressure (PO2) of EAN38 at 27 msw (87 fsw)? - (ANSWER)1.4 ata
At what depth in the ocean is the absolute pressure 6.4 ata? - (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? - (ANSWER)0.35
What is the partial pressure of nitrogen in air at 40 msw (130 fsw)? - (ANSWER)3.9 ata
True or False. Narcosis is reduced significantly when diving with enriched air nitrox. -
(ANSWER)False
The mechanisms of nitrogen narcosis are thought to be similar to: - (ANSWER)Anesthesia
Oxygen is used by the body in: - (ANSWER)Metabolism
The term used for low oxygen in the body is: - (ANSWER)Hypoxia
