NAUI Nitrox Diver Exam Questions and Answers – Verified 2025 Edition (Complete Study Resource)

8/17/25, 8:21 AM




NAUI NITROX DIVER EXAM QUESTIONS AND
ANSWERS (VERIFIED ANSWERS) (LATEST UPDATE
2025) UPDATE!!

The main reason to dive with Nitrogen
"nitrox" is to reduce exposure to
some of the problems in diving
caused by:

We say that nitrogen is an Our bodies do not use the nitrogen we breathe.
inert gas. This means _.



What is the primary safety hazard of Narcosis
breathing nitrogen at depth?


NAUI sanctioned enriched air nitrox 1992
training in:
Extended bottom
Benefits of nitrox include: time Increased
safety margins
Shorter surface
intervals
The greatest advantages for diving 15- 33 msw (50-110 fsw)
using nitrox occur in what depth
range?
True or False: A scuba diver False
breathing nitrox avoids any risk of
nitrogen narcosis.
If a nitrox mix is 36% oxygen, what is 0.36
the fraction of oxygen in the gas mix?

_____ describes the relationship Boyle's Law
between absolute pressure and
the volume of a gas.

To find the partial pressure of a gas in Multiply the gas fraction by the absolute pressure.
a mixture:




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The water pressure plus Absolute pressure
atmospheric pressure equals:





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