NITROX EXAM GUIDE QUESTIONS WITH
COMPLETE SOLUTIONS
Nitrox is what kind of breathing gas? - Answer-Mid range
The mechanisms of nitrogen narcosis are thought to be similar to _____. - Answer-
Anesthesia
Nitrox provides the greatest advantages for dives in the _____ depth range. - Answer-
50-110 ft
Credit for developing and introducing nitrox diving techniques for standard scuba goes
to _____. - Answer-Dr. Morgon Wells
NAUI sanctioned enriched air nitrox training in _____. - Answer-1992
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?
Amount of gas dissolve in liquid at temp is the function of partial pressure of the gas that
is in contact with the liquid and solubility coefficient of the gas in the particular liquid -
Answer-Henry's Law
What is Archimedes' principle - Answer-any body completely or partially submerged in a
fluid (gas or liquid) at rest is acted upon by an upward, or buoyant, force the magnitude
of which is equal to the weight of the fluid
What is daltons law? - Answer-The whole is equal to the sum of its parts
At a constant temperature the volume of gas varies inversely with absolute pressure
and density varies directly with absolute pressure - Answer-Boyles law
Boyles
Charles
Henrys
Daltons - Answer-Boyles: Pressure & volume
Charles: Temperature and volume
Henrys: Solubility of gases
Daltons: Partial pressures
The controlled release of pressure during ascent from a scuba dive is _____. - Answer-
Decompression
For most persons, symptoms of hypoxia begin to appear when the PO2 _____. -
Answer-Falls below about 0.16 ata.
COMPLETE SOLUTIONS
Nitrox is what kind of breathing gas? - Answer-Mid range
The mechanisms of nitrogen narcosis are thought to be similar to _____. - Answer-
Anesthesia
Nitrox provides the greatest advantages for dives in the _____ depth range. - Answer-
50-110 ft
Credit for developing and introducing nitrox diving techniques for standard scuba goes
to _____. - Answer-Dr. Morgon Wells
NAUI sanctioned enriched air nitrox training in _____. - Answer-1992
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?
Amount of gas dissolve in liquid at temp is the function of partial pressure of the gas that
is in contact with the liquid and solubility coefficient of the gas in the particular liquid -
Answer-Henry's Law
What is Archimedes' principle - Answer-any body completely or partially submerged in a
fluid (gas or liquid) at rest is acted upon by an upward, or buoyant, force the magnitude
of which is equal to the weight of the fluid
What is daltons law? - Answer-The whole is equal to the sum of its parts
At a constant temperature the volume of gas varies inversely with absolute pressure
and density varies directly with absolute pressure - Answer-Boyles law
Boyles
Charles
Henrys
Daltons - Answer-Boyles: Pressure & volume
Charles: Temperature and volume
Henrys: Solubility of gases
Daltons: Partial pressures
The controlled release of pressure during ascent from a scuba dive is _____. - Answer-
Decompression
For most persons, symptoms of hypoxia begin to appear when the PO2 _____. -
Answer-Falls below about 0.16 ata.
