NAUI Nitrox Diver UPDATED Questions
and CORRECT Answers
the ______ in the air you are breathing limits the time you can stay at depth - CORRECT
ANSWER - nitrogen
in the early twentieth century, a quantitative model for nitrogen loading and dive tables were
developed by - CORRECT ANSWER - John Scott Haldane
we say that nitrogen is an inert gas. this means - CORRECT ANSWER - our bodies do not
use the nitrogen we breathe
credit for developing and introducing nitrox diving techniques for standard scuba goes to -
CORRECT ANSWER - Dr. Morgan Wells
NAUI sanctioned enriched air nitrox training in - CORRECT ANSWER - 1992
two benefits of diving with nitrox are - CORRECT ANSWER - longer dive times and
shorter surface intervals
what does the "x" stand for in the term EANx? - CORRECT ANSWER - the percentage of
oxygen in the mix
in 1878, Paul Bert established that_____, liberated as bubbles following sudden decompression
was the cause of decompression sickeness - CORRECT ANSWER - nitrogen
nitrox is a _____ breathing gas - CORRECT ANSWER - mid-range
nitrox provides the greatest advantages for dives in the _____ depth range - CORRECT
ANSWER - 15-33 m (50-110 ft)
, as a gas is heated in a rigid closed container its pressure will - CORRECT ANSWER -
increase
"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? - CORRECT
ANSWER - Henry's Law
atmospheric pressure can be measured in many ways. what is one atmosphere in millimeters of
mercury? - CORRECT ANSWER - 760 mmHg
the ____ of a specific gas in a mix is the portion of the total pressure exerted by that gas -
CORRECT ANSWER - partial pressure
what is the absolute pressure at 17 msw (56 fsw)? - CORRECT ANSWER - 2.7 ata
what is the oxygen partial pressure in EAN35 at a depth of 26 msw (85 fsw)? - CORRECT
ANSWER - 1.3 ata
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? - CORRECT ANSWER - 0.28
what is the partial pressure of oxygen in air at a depth of 21 msw (69 fsw)? - CORRECT
ANSWER - 0.65 ata
the symptoms of nitrogen narcosis parallel those often seen in - CORRECT ANSWER -
alcohol intoxication
____ law states: "at a constant temperature, the volume of a gas varies inversely with absolute
pressure, while the density of a gas varies directly with absolute pressure." - CORRECT
ANSWER - Boyle's
and CORRECT Answers
the ______ in the air you are breathing limits the time you can stay at depth - CORRECT
ANSWER - nitrogen
in the early twentieth century, a quantitative model for nitrogen loading and dive tables were
developed by - CORRECT ANSWER - John Scott Haldane
we say that nitrogen is an inert gas. this means - CORRECT ANSWER - our bodies do not
use the nitrogen we breathe
credit for developing and introducing nitrox diving techniques for standard scuba goes to -
CORRECT ANSWER - Dr. Morgan Wells
NAUI sanctioned enriched air nitrox training in - CORRECT ANSWER - 1992
two benefits of diving with nitrox are - CORRECT ANSWER - longer dive times and
shorter surface intervals
what does the "x" stand for in the term EANx? - CORRECT ANSWER - the percentage of
oxygen in the mix
in 1878, Paul Bert established that_____, liberated as bubbles following sudden decompression
was the cause of decompression sickeness - CORRECT ANSWER - nitrogen
nitrox is a _____ breathing gas - CORRECT ANSWER - mid-range
nitrox provides the greatest advantages for dives in the _____ depth range - CORRECT
ANSWER - 15-33 m (50-110 ft)
, as a gas is heated in a rigid closed container its pressure will - CORRECT ANSWER -
increase
"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? - CORRECT
ANSWER - Henry's Law
atmospheric pressure can be measured in many ways. what is one atmosphere in millimeters of
mercury? - CORRECT ANSWER - 760 mmHg
the ____ of a specific gas in a mix is the portion of the total pressure exerted by that gas -
CORRECT ANSWER - partial pressure
what is the absolute pressure at 17 msw (56 fsw)? - CORRECT ANSWER - 2.7 ata
what is the oxygen partial pressure in EAN35 at a depth of 26 msw (85 fsw)? - CORRECT
ANSWER - 1.3 ata
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? - CORRECT ANSWER - 0.28
what is the partial pressure of oxygen in air at a depth of 21 msw (69 fsw)? - CORRECT
ANSWER - 0.65 ata
the symptoms of nitrogen narcosis parallel those often seen in - CORRECT ANSWER -
alcohol intoxication
____ law states: "at a constant temperature, the volume of a gas varies inversely with absolute
pressure, while the density of a gas varies directly with absolute pressure." - CORRECT
ANSWER - Boyle's
