NAUI NITROX DIVER FINAL ACTUAL EXAM |HIGH
YIELD QUESTIONS AND ANSWERS | MOST HIGHLY
TESTED QUESTIONS AND WELL VERIFIED ANSWERS |
EXPERT VERIFIED FOR GUARANTEE PASS | ACTUAL
EXAM WITH UPDATED QUESTIONS | REVIEWED AND
RATIONALIZED!!!
Exam Coverage
Exam coverage for the NAUI Nitrox Diver Final Exam includes the
comprehensive knowledge and practical application of safe diving
practices using enriched air nitrox (EANx), focusing on gas laws,
partial pressures, and the physiological effects of increased oxygen
exposure such as central nervous system (CNS) and pulmonary
oxygen toxicity. It evaluates understanding of oxygen limits, nitrogen
absorption, and how nitrox impacts no-decompression limits, while
emphasizing dive planning skills such as calculating maximum
operating depth (MOD), equivalent air depth (EAD), and tracking
oxygen exposure. The exam also assesses competence in analyzing
gas mixtures, proper cylinder labeling, use of oxygen analyzers, dive
computer settings, equipment considerations, and adherence to
safety protocols, with a strong focus on risk management and
applying safe, responsible diving practices in real-world scenarios.
We say that nitrogen is an inert gas. This means_____.
ANSWER:
Our bodies do not use the nitrogen we breathe.
,The main reason to dive with "nitrox" is to reduce exposure to some
of the problems in diving caused by:
ANSWER:
Nitrogen
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
Breathing high partial pressures of oxygen can cause:
ANSWER:
Convulsions
The accepted oxygen partial pressure exposure limit for recreational
nitrox diving is:
YIELD QUESTIONS AND ANSWERS | MOST HIGHLY
TESTED QUESTIONS AND WELL VERIFIED ANSWERS |
EXPERT VERIFIED FOR GUARANTEE PASS | ACTUAL
EXAM WITH UPDATED QUESTIONS | REVIEWED AND
RATIONALIZED!!!
Exam Coverage
Exam coverage for the NAUI Nitrox Diver Final Exam includes the
comprehensive knowledge and practical application of safe diving
practices using enriched air nitrox (EANx), focusing on gas laws,
partial pressures, and the physiological effects of increased oxygen
exposure such as central nervous system (CNS) and pulmonary
oxygen toxicity. It evaluates understanding of oxygen limits, nitrogen
absorption, and how nitrox impacts no-decompression limits, while
emphasizing dive planning skills such as calculating maximum
operating depth (MOD), equivalent air depth (EAD), and tracking
oxygen exposure. The exam also assesses competence in analyzing
gas mixtures, proper cylinder labeling, use of oxygen analyzers, dive
computer settings, equipment considerations, and adherence to
safety protocols, with a strong focus on risk management and
applying safe, responsible diving practices in real-world scenarios.
We say that nitrogen is an inert gas. This means_____.
ANSWER:
Our bodies do not use the nitrogen we breathe.
,The main reason to dive with "nitrox" is to reduce exposure to some
of the problems in diving caused by:
ANSWER:
Nitrogen
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
Breathing high partial pressures of oxygen can cause:
ANSWER:
Convulsions
The accepted oxygen partial pressure exposure limit for recreational
nitrox diving is:
