NAUI Nitrox Diver Final Exam 2025/2026 ACTUAL
COMPLETE REAL EXAM ELABORATIONS QUESTIONS
AND VERIFIED ANSWERS (100% CORRECT ANSWERS)
ALREADY GRADED A+ / 2025 NEWEST VERSION!!
The main reason to dive with "nitrox" is to reduce exposure to some of the
problems in diving caused by: - ...(ANSWERS)....Nitrogen
We say that nitrogen is an inert gas. This means_____. - ...(ANSWERS)....Our
bodies do not use the nitrogen we breathe.
What is the primary safety hazard of breathing nitrogen at depth? -
...(ANSWERS)....Narcosis
NAUI sanctioned enriched air nitrox training in: - ...(ANSWERS)....1992
Benefits of nitrox include: - ...(ANSWERS)....Extended bottom time
Increased safety margins
Shorter surface intervals
The greatest advantages for diving using nitrox occur in what depth range? -
...(ANSWERS)....15- 33 msw (50-110 fsw)
True or False: A scuba diver breathing nitrox avoids any risk of nitrogen narcosis. -
...(ANSWERS)....False
, If a nitrox mix is 36% oxygen, what is the fraction of oxygen in the gas mix? -
...(ANSWERS)....0.36
_____ describes the relationship between absolute pressure and the volume of a
gas. - ...(ANSWERS)....Boyle's Law
To find the partial pressure of a gas in a mixture: - ...(ANSWERS)....Multiply the
gas fraction by the absolute pressure.
The water pressure plus atmospheric pressure equals: - ...(ANSWERS)....Absolute
pressure
What is the absolute pressure at 34 msw (111 fsw)? - ...(ANSWERS)....4.4 ata
What is the nitrogen partial pressure (PN2) in EAN35 at a depth of 26 msw (85
fsw)? - ...(ANSWERS)....2.3 ata
What is the oxygen partial pressure (PO2) of EAN38 at 27 msw (87 fsw)? -
...(ANSWERS)....1.4 ata
At what depth in the ocean is the absolute pressure 6.4 ata? - ...(ANSWERS)....54
msw (178 fsw)
COMPLETE REAL EXAM ELABORATIONS QUESTIONS
AND VERIFIED ANSWERS (100% CORRECT ANSWERS)
ALREADY GRADED A+ / 2025 NEWEST VERSION!!
The main reason to dive with "nitrox" is to reduce exposure to some of the
problems in diving caused by: - ...(ANSWERS)....Nitrogen
We say that nitrogen is an inert gas. This means_____. - ...(ANSWERS)....Our
bodies do not use the nitrogen we breathe.
What is the primary safety hazard of breathing nitrogen at depth? -
...(ANSWERS)....Narcosis
NAUI sanctioned enriched air nitrox training in: - ...(ANSWERS)....1992
Benefits of nitrox include: - ...(ANSWERS)....Extended bottom time
Increased safety margins
Shorter surface intervals
The greatest advantages for diving using nitrox occur in what depth range? -
...(ANSWERS)....15- 33 msw (50-110 fsw)
True or False: A scuba diver breathing nitrox avoids any risk of nitrogen narcosis. -
...(ANSWERS)....False
, If a nitrox mix is 36% oxygen, what is the fraction of oxygen in the gas mix? -
...(ANSWERS)....0.36
_____ describes the relationship between absolute pressure and the volume of a
gas. - ...(ANSWERS)....Boyle's Law
To find the partial pressure of a gas in a mixture: - ...(ANSWERS)....Multiply the
gas fraction by the absolute pressure.
The water pressure plus atmospheric pressure equals: - ...(ANSWERS)....Absolute
pressure
What is the absolute pressure at 34 msw (111 fsw)? - ...(ANSWERS)....4.4 ata
What is the nitrogen partial pressure (PN2) in EAN35 at a depth of 26 msw (85
fsw)? - ...(ANSWERS)....2.3 ata
What is the oxygen partial pressure (PO2) of EAN38 at 27 msw (87 fsw)? -
...(ANSWERS)....1.4 ata
At what depth in the ocean is the absolute pressure 6.4 ata? - ...(ANSWERS)....54
msw (178 fsw)
