NAUI Nitrox Ceritification UPDATED ACTUAL Questions
and CORRECT Answers
Nitrogen The ___ in the air you are breathing limits the time you can stay at depth.
John Scott Haldane In the early twentieth century, a quantitative model for nitrogen loading and dive
tables were developed by _.
, Our bodies do not use the nitrogen we breathe We say that nitrogen is an inert gas. This means __ _.
Dr. Morgan Wells Credit for developing and introducing nitrox diving techniques for standard scuba
goes to __ _.
1992 NAUI sanctioned enriched air nitrox training in___ _.
Longer dive times and shorter surface intervals Two benefits of diving with nitrox are __ _.
The percentage of oxygen in the mix. What does the "x" stand for in the term EANx?
Nitrogen In 1878, Paul Bert established that ___ , liberated as bubbles following sudden
decompression was the cause of decompression sickness.
Mid-range Nitrox is a ___ breathing gas.
15-33 m (50-110 ft) Nitrox provides the greatest advantages for dives in the____ depth range.
Increase As a gas is heated in a rigid closed container its pressure will __ _.
Henry's Law "If one quantity of gas will dissolve at one atmosphere of pressure, then three
quantities of gas will dissolve at three atmospheres." This statement refers to which
law?
760 mmHg Atmospheric pressure can be measured in many ways. What is one atmosphere in
millimeters of mercury?
Partial pressure The ___ of a specific gas in a mix is the portion of the total pressure exerted by
that gas.
2.7 ata What is the absolute pressure at 17 msw (56 fsw)?
1.3 ata What is the oxygen partial pressure (PO2) in EAN35 at a depth of 26 msw (85
fsw)?
0.28 If the oxygen partial pressure in your mix is 1.3 ata at a depth of 37 msw (122 fsw),
what is the fraction of oxygen in the mix?
0.65 ata What is the partial pressure of oxygen in air at a depth of 21 msw (69 fsw)?
Alcohol intoxication The symptoms of nitrogen narcosis parallel those often seen in ____.
and CORRECT Answers
Nitrogen The ___ in the air you are breathing limits the time you can stay at depth.
John Scott Haldane In the early twentieth century, a quantitative model for nitrogen loading and dive
tables were developed by _.
, Our bodies do not use the nitrogen we breathe We say that nitrogen is an inert gas. This means __ _.
Dr. Morgan Wells Credit for developing and introducing nitrox diving techniques for standard scuba
goes to __ _.
1992 NAUI sanctioned enriched air nitrox training in___ _.
Longer dive times and shorter surface intervals Two benefits of diving with nitrox are __ _.
The percentage of oxygen in the mix. What does the "x" stand for in the term EANx?
Nitrogen In 1878, Paul Bert established that ___ , liberated as bubbles following sudden
decompression was the cause of decompression sickness.
Mid-range Nitrox is a ___ breathing gas.
15-33 m (50-110 ft) Nitrox provides the greatest advantages for dives in the____ depth range.
Increase As a gas is heated in a rigid closed container its pressure will __ _.
Henry's Law "If one quantity of gas will dissolve at one atmosphere of pressure, then three
quantities of gas will dissolve at three atmospheres." This statement refers to which
law?
760 mmHg Atmospheric pressure can be measured in many ways. What is one atmosphere in
millimeters of mercury?
Partial pressure The ___ of a specific gas in a mix is the portion of the total pressure exerted by
that gas.
2.7 ata What is the absolute pressure at 17 msw (56 fsw)?
1.3 ata What is the oxygen partial pressure (PO2) in EAN35 at a depth of 26 msw (85
fsw)?
0.28 If the oxygen partial pressure in your mix is 1.3 ata at a depth of 37 msw (122 fsw),
what is the fraction of oxygen in the mix?
0.65 ata What is the partial pressure of oxygen in air at a depth of 21 msw (69 fsw)?
Alcohol intoxication The symptoms of nitrogen narcosis parallel those often seen in ____.
