NAUI Nitrox Diver Final Exam | 80 Questions
with 100% Correct Answers | Verified |
Latest Update 2024
The main reason to dive with "nitrox" is to reduce exposure to some of the problems in diving caused by:
- ✔✔Nitrogen
We say that nitrogen is an inert gas. This means_____. - ✔✔Our bodies do not use the nitrogen we
breathe.
What is the primary safety hazard of breathing nitrogen at depth? - ✔✔Narcosis
NAUI sanctioned enriched air nitrox training in: - ✔✔1992
Benefits of nitrox include: - ✔✔
Extended bottom time
Increased safety margins
Shorter surface intervals
The greatest advantages for diving using nitrox occur in what depth range? - ✔✔15- 33 msw (50-110 fsw)
True or False: A scuba diver breathing nitrox avoids any risk of nitrogen narcosis. - ✔✔False
If a nitrox mix is 36% oxygen, what is the fraction of oxygen in the gas mix? - ✔✔0.36
_____ describes the relationship between absolute pressure and the volume of a gas. - ✔✔Boyle's Law
To find the partial pressure of a gas in a mixture: - ✔✔Multiply the gas fraction by the absolute pressure.
, The water pressure plus atmospheric pressure equals: - ✔✔Absolute pressure
What is the absolute pressure at 34 msw (111 fsw)? - ✔✔4.4 ata
What is the nitrogen partial pressure (PN2) in EAN35 at a depth of 26 msw (85 fsw)? - ✔✔2.3 ata
What is the oxygen partial pressure (PO2) of EAN38 at 27 msw (87 fsw)? - ✔✔1.4 ata
At what depth in the ocean is the absolute pressure 6.4 ata? - ✔✔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? -
✔✔0.35
What is the partial pressure of nitrogen in air at 40 msw (130 fsw)? - ✔✔3.9 ata
True or False. Narcosis is reduced significantly when diving with enriched air nitrox. - ✔✔False
The mechanisms of nitrogen narcosis are thought to be similar to: - ✔✔Anesthesia
Oxygen is used by the body in: - ✔✔Metabolism
The term used for low oxygen in the body is: - ✔✔Hypoxia
Breathing high partial pressures of oxygen can cause: - ✔✔Convulsions
The accepted oxygen partial pressure exposure limit for recreational nitrox diving is: - ✔✔1.4 ata
with 100% Correct Answers | Verified |
Latest Update 2024
The main reason to dive with "nitrox" is to reduce exposure to some of the problems in diving caused by:
- ✔✔Nitrogen
We say that nitrogen is an inert gas. This means_____. - ✔✔Our bodies do not use the nitrogen we
breathe.
What is the primary safety hazard of breathing nitrogen at depth? - ✔✔Narcosis
NAUI sanctioned enriched air nitrox training in: - ✔✔1992
Benefits of nitrox include: - ✔✔
Extended bottom time
Increased safety margins
Shorter surface intervals
The greatest advantages for diving using nitrox occur in what depth range? - ✔✔15- 33 msw (50-110 fsw)
True or False: A scuba diver breathing nitrox avoids any risk of nitrogen narcosis. - ✔✔False
If a nitrox mix is 36% oxygen, what is the fraction of oxygen in the gas mix? - ✔✔0.36
_____ describes the relationship between absolute pressure and the volume of a gas. - ✔✔Boyle's Law
To find the partial pressure of a gas in a mixture: - ✔✔Multiply the gas fraction by the absolute pressure.
, The water pressure plus atmospheric pressure equals: - ✔✔Absolute pressure
What is the absolute pressure at 34 msw (111 fsw)? - ✔✔4.4 ata
What is the nitrogen partial pressure (PN2) in EAN35 at a depth of 26 msw (85 fsw)? - ✔✔2.3 ata
What is the oxygen partial pressure (PO2) of EAN38 at 27 msw (87 fsw)? - ✔✔1.4 ata
At what depth in the ocean is the absolute pressure 6.4 ata? - ✔✔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? -
✔✔0.35
What is the partial pressure of nitrogen in air at 40 msw (130 fsw)? - ✔✔3.9 ata
True or False. Narcosis is reduced significantly when diving with enriched air nitrox. - ✔✔False
The mechanisms of nitrogen narcosis are thought to be similar to: - ✔✔Anesthesia
Oxygen is used by the body in: - ✔✔Metabolism
The term used for low oxygen in the body is: - ✔✔Hypoxia
Breathing high partial pressures of oxygen can cause: - ✔✔Convulsions
The accepted oxygen partial pressure exposure limit for recreational nitrox diving is: - ✔✔1.4 ata
