NAUI Nitrox Diver Final Exam Questions and Answers 100% Solved | Graded A+

NAUI Nitrox Diver Final Exam Questions

and Answers 100% Solved | Graded A+


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


1
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.

, 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




2
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.