NAUI NITROX DIVER EXAM GUIDE
QUESTIONS AND ANSWERS
The symptoms of nitrogen narcosis parallel those often seen in _____. -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." -Answer-Boyle's Law
True or False: A diver suffering from nitrogen narcosis will always be aware that
he/she is impaired. -Answer-False
The mechanisms of nitrogen narcosis are thought to be similar to: -Answer-
Anesthesia
The controlled release of pressure during ascent from a scuba dive is: -Answer-
Decompression
Which gas in air is essential to sustain life? -Answer-Oxygen
The primary waste product from the metabolism of oxygen is: -Answer-Carbon
Dioxide
For most persons, symptoms of hypoxia begin to appear when the PO2: -Answer-
Falls below about 0.16 ata.
Pulmonary oxygen toxicity results from: -Answer-Prolonged exposure to elevated
oxygen partial pressures.
One of the factors that can increase susceptibility to CNS oxygen toxicity is: -
Answer-Heavy exercise and carbon dioxide buildup.
The acronym used to remember signs and symptoms of oxygen toxicity is: -Answer-
Con V E N T I D.
The recommended maximum PO2 for enriched air nitrox diving is: -Answer-1.4 ata.
The first precursor symptom of CNS oxygen toxicity is: -Answer-Precursor symptoms
are highly variable.
A stuporous condition characterized by impaired mental and physical performance
and changes in mood and behavior is known as _____. -Answer-Nitrogen narcosis
The two most commonly used nitrox mixtures, also known as NOAA Nitrox I and
NOAA Nitrox II, are: -Answer-32% and 36% oxygen.
QUESTIONS AND ANSWERS
The symptoms of nitrogen narcosis parallel those often seen in _____. -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." -Answer-Boyle's Law
True or False: A diver suffering from nitrogen narcosis will always be aware that
he/she is impaired. -Answer-False
The mechanisms of nitrogen narcosis are thought to be similar to: -Answer-
Anesthesia
The controlled release of pressure during ascent from a scuba dive is: -Answer-
Decompression
Which gas in air is essential to sustain life? -Answer-Oxygen
The primary waste product from the metabolism of oxygen is: -Answer-Carbon
Dioxide
For most persons, symptoms of hypoxia begin to appear when the PO2: -Answer-
Falls below about 0.16 ata.
Pulmonary oxygen toxicity results from: -Answer-Prolonged exposure to elevated
oxygen partial pressures.
One of the factors that can increase susceptibility to CNS oxygen toxicity is: -
Answer-Heavy exercise and carbon dioxide buildup.
The acronym used to remember signs and symptoms of oxygen toxicity is: -Answer-
Con V E N T I D.
The recommended maximum PO2 for enriched air nitrox diving is: -Answer-1.4 ata.
The first precursor symptom of CNS oxygen toxicity is: -Answer-Precursor symptoms
are highly variable.
A stuporous condition characterized by impaired mental and physical performance
and changes in mood and behavior is known as _____. -Answer-Nitrogen narcosis
The two most commonly used nitrox mixtures, also known as NOAA Nitrox I and
NOAA Nitrox II, are: -Answer-32% and 36% oxygen.
