NAUI Nitrox Diver Final Exam Questions and Answers
NAUI Nitrox Diver Final Exam Questions
and Answers
Question 1
The main reason to dive with "nitrox" is to reduce exposure to some of the problems
in diving caused by:
Correct Answer
Nitrogen
Question 2
We say that nitrogen is an inert gas. This means_____.
Correct Answer
Our bodies do not use the nitrogen we breathe.
Question 3
What is the primary safety hazard of breathing nitrogen at depth?
Correct Answer
Narcosis
Question 4
NAUI sanctioned enriched air nitrox training in:
Correct Answer
1992
Page 1 of 16
, NAUI Nitrox Diver Final Exam Questions and Answers
Question 5
Benefits of nitrox include:
Correct Answer
Extended bottom time
Increased safety margins
Shorter surface intervals
Question 6
The greatest advantages for diving using nitrox occur in what depth range?
Correct Answer
15- 33 msw (50-110 fsw)
Question 7
True or False: A scuba diver breathing nitrox avoids any risk of nitrogen narcosis.
Correct Answer
False
Question 8
If a nitrox mix is 36% oxygen, what is the fraction of oxygen in the gas mix?
Correct Answer
0.36
Question 9
_____ describes the relationship between absolute pressure and the volume of a gas.
Correct Answer
Boyle's Law
Page 2 of 16
, NAUI Nitrox Diver Final Exam Questions and Answers
Question 10
To find the partial pressure of a gas in a mixture:
Correct Answer
Multiply the gas fraction by the absolute pressure.
Question 11
The water pressure plus atmospheric pressure equals:
Correct Answer
Absolute pressure
Question 12
What is the absolute pressure at 34 msw (111 fsw)?
Correct Answer
4.4 ata
Question 13
What is the nitrogen partial pressure (PN2) in EAN35 at a depth of 26 msw (85 fsw)?
Correct Answer
2.3 ata
Question 14
What is the oxygen partial pressure (PO2) of EAN38 at 27 msw (87 fsw)?
Correct Answer
1.4 ata
Question 15
At what depth in the ocean is the absolute pressure 6.4 ata?
Correct Answer
54 msw (178 fsw)
Page 3 of 16
NAUI Nitrox Diver Final Exam Questions
and Answers
Question 1
The main reason to dive with "nitrox" is to reduce exposure to some of the problems
in diving caused by:
Correct Answer
Nitrogen
Question 2
We say that nitrogen is an inert gas. This means_____.
Correct Answer
Our bodies do not use the nitrogen we breathe.
Question 3
What is the primary safety hazard of breathing nitrogen at depth?
Correct Answer
Narcosis
Question 4
NAUI sanctioned enriched air nitrox training in:
Correct Answer
1992
Page 1 of 16
, NAUI Nitrox Diver Final Exam Questions and Answers
Question 5
Benefits of nitrox include:
Correct Answer
Extended bottom time
Increased safety margins
Shorter surface intervals
Question 6
The greatest advantages for diving using nitrox occur in what depth range?
Correct Answer
15- 33 msw (50-110 fsw)
Question 7
True or False: A scuba diver breathing nitrox avoids any risk of nitrogen narcosis.
Correct Answer
False
Question 8
If a nitrox mix is 36% oxygen, what is the fraction of oxygen in the gas mix?
Correct Answer
0.36
Question 9
_____ describes the relationship between absolute pressure and the volume of a gas.
Correct Answer
Boyle's Law
Page 2 of 16
, NAUI Nitrox Diver Final Exam Questions and Answers
Question 10
To find the partial pressure of a gas in a mixture:
Correct Answer
Multiply the gas fraction by the absolute pressure.
Question 11
The water pressure plus atmospheric pressure equals:
Correct Answer
Absolute pressure
Question 12
What is the absolute pressure at 34 msw (111 fsw)?
Correct Answer
4.4 ata
Question 13
What is the nitrogen partial pressure (PN2) in EAN35 at a depth of 26 msw (85 fsw)?
Correct Answer
2.3 ata
Question 14
What is the oxygen partial pressure (PO2) of EAN38 at 27 msw (87 fsw)?
Correct Answer
1.4 ata
Question 15
At what depth in the ocean is the absolute pressure 6.4 ata?
Correct Answer
54 msw (178 fsw)
Page 3 of 16
