8/17/25, 8:22 AM
NAUI NITROX DIVER EXAM QUESTIONS AND
ANSWERS (VERIFIED ANSWERS) (LATEST
UPDATE 2025) UPDATE!!
In 1878, Paul Bert established that Nitrogen
__________________________________,
liberated
as bubbles following sudden
decompression was the cause of
decompression sickness.
Nitrox is a__breathing gas. Mid-Range
Nitrox provides the greatest 15-33m (50-110ft)
advantages for dives in the
_______________depth range.
As a gas is heated in a rigid closed Increase
container its pressure will:
If one quantity of gas will dissolve Henry's Law
at one atmosphere of pressure, then
three quantities of gas will dissolve
at three atmospheres." This
statement refers to which law?
Atmospheric pressure can be 760mmHg
measured in many ways. What is one
atmosphere in millimeters of
mercury?
The________of a specific gas in a mix is Partial Pressure
the
portion of the total pressure
exerted by that gas.
1/7
, 8/17/25, 8:22 AM
What is the absolute pressure at 17 2.7 ata
msw (56 fsw)?
What is the oxygen partial 1.3 ata
pressure (PO2) in EAN35 at a
depth of 26 msw (85 fsw)?
If the oxygen partial pressure in .28
your mix is 1.3 ata at a depth of 37
msw (122 fsw), what is the fraction
of oxygen in the mix?
What is the partial pressure of oxygen .65 ata
in air at a depth of 21 msw (69 fsw)?
The symptoms of nitrogen Alcohol Intoxication
narcosis parallel those often seen
in___________________.
_____ Law states: "At a constant Boyle's Law
temperature, the volume of a gas
varies inversely with absolute
pressure, while the density of a gas
varies directly with absolute
pressure."
True or False: A diver suffering False
from nitrogen narcosis will always
be aware that he/she is impaired.
The mechanisms of nitrogen Anesthesia
narcosis are thought to be
similar to:
The controlled release of Decompression
pressure during ascent from a
scuba dive is:
Which gas in air is essential to sustain Oxygen
life?
The primary waste product Carbon Dioxide
from the metabolism of
oxygen is:
For most persons, symptoms of Falls below about 0.16 ata.
hypoxia begin to appear when the
PO2:
Pulmonary oxygen toxicity results Prolonged exposure to elevated oxygen partial pressures.
from:
One of the factors that can Heavy exercise and carbon dioxide buildup.
increase susceptibility to CNS
oxygen toxicity is:
2/7
NAUI NITROX DIVER EXAM QUESTIONS AND
ANSWERS (VERIFIED ANSWERS) (LATEST
UPDATE 2025) UPDATE!!
In 1878, Paul Bert established that Nitrogen
__________________________________,
liberated
as bubbles following sudden
decompression was the cause of
decompression sickness.
Nitrox is a__breathing gas. Mid-Range
Nitrox provides the greatest 15-33m (50-110ft)
advantages for dives in the
_______________depth range.
As a gas is heated in a rigid closed Increase
container its pressure will:
If one quantity of gas will dissolve Henry's Law
at one atmosphere of pressure, then
three quantities of gas will dissolve
at three atmospheres." This
statement refers to which law?
Atmospheric pressure can be 760mmHg
measured in many ways. What is one
atmosphere in millimeters of
mercury?
The________of a specific gas in a mix is Partial Pressure
the
portion of the total pressure
exerted by that gas.
1/7
, 8/17/25, 8:22 AM
What is the absolute pressure at 17 2.7 ata
msw (56 fsw)?
What is the oxygen partial 1.3 ata
pressure (PO2) in EAN35 at a
depth of 26 msw (85 fsw)?
If the oxygen partial pressure in .28
your mix is 1.3 ata at a depth of 37
msw (122 fsw), what is the fraction
of oxygen in the mix?
What is the partial pressure of oxygen .65 ata
in air at a depth of 21 msw (69 fsw)?
The symptoms of nitrogen Alcohol Intoxication
narcosis parallel those often seen
in___________________.
_____ Law states: "At a constant Boyle's Law
temperature, the volume of a gas
varies inversely with absolute
pressure, while the density of a gas
varies directly with absolute
pressure."
True or False: A diver suffering False
from nitrogen narcosis will always
be aware that he/she is impaired.
The mechanisms of nitrogen Anesthesia
narcosis are thought to be
similar to:
The controlled release of Decompression
pressure during ascent from a
scuba dive is:
Which gas in air is essential to sustain Oxygen
life?
The primary waste product Carbon Dioxide
from the metabolism of
oxygen is:
For most persons, symptoms of Falls below about 0.16 ata.
hypoxia begin to appear when the
PO2:
Pulmonary oxygen toxicity results Prolonged exposure to elevated oxygen partial pressures.
from:
One of the factors that can Heavy exercise and carbon dioxide buildup.
increase susceptibility to CNS
oxygen toxicity is:
2/7
