NAUI Nitrox Diver Newest Updated Exam with precise detailed
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solutions
In 1878, Paul Bert established that _____, liberated as bubbles following sudden
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decompression was the cause of decompression sickness. - ✔✔Nitrogen || || || || || || || ||
Nitrox is a _____ breathing gas. - ✔✔Mid-Range
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Nitrox provides the greatest advantages for dives in the _____ depth range. - ✔✔15-
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33m (50-110ft) ||
As a gas is heated in a rigid closed container its pressure will: - ✔✔Increase
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If one quantity of gas will dissolve at one atmosphere of pressure, then three
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quantities of gas will dissolve at three atmospheres." This statement refers to which
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law? - ✔✔Henry's Law
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Atmospheric pressure can be measured in many ways. What is one atmosphere in
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millimeters of mercury? - ✔✔760mmHg || || || ||
The _____________ of a specific gas in a mix is the portion of the total pressure
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exerted by that gas. - ✔✔Partial Pressure
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What is the absolute pressure at 17 msw (56 fsw)? - ✔✔2.7 ata
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What is the oxygen partial pressure (PO2) in EAN35 at a depth of 26 msw (85 fsw)? -
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✔✔1.3 ata ||
, If the oxygen partial pressure in your mix is 1.3 ata at a depth of 37 msw (122 fsw),
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what is the fraction of oxygen in the mix? - ✔✔.28
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What is the partial pressure of oxygen in air at a depth of 21 msw (69 fsw)? - ✔✔.65
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ata
The symptoms of nitrogen narcosis parallel those often seen in _____. - ✔✔Alcohol
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Intoxication
_____ Law states: "At a constant temperature, the volume of a gas varies inversely
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with absolute pressure, while the density of a gas varies directly with absolute
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pressure." - ✔✔Boyle's Law || || ||
True or False: A diver suffering from nitrogen narcosis will always be aware that
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he/she is impaired. - ✔✔False || || || ||
The mechanisms of nitrogen narcosis are thought to be similar to: - ✔✔Anesthesia
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The controlled release of pressure during ascent from a scuba dive is: -
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✔✔Decompression
Which gas in air is essential to sustain life? - ✔✔Oxygen
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The primary waste product from the metabolism of oxygen is: - ✔✔Carbon Dioxide
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For most persons, symptoms of hypoxia begin to appear when the PO2: - ✔✔Falls
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below about 0.16 ata. || || ||
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solutions
In 1878, Paul Bert established that _____, liberated as bubbles following sudden
|| || || || || || || || || || || ||
decompression was the cause of decompression sickness. - ✔✔Nitrogen || || || || || || || ||
Nitrox is a _____ breathing gas. - ✔✔Mid-Range
|| || || || || || ||
Nitrox provides the greatest advantages for dives in the _____ depth range. - ✔✔15-
|| || || || || || || || || || || || ||
33m (50-110ft) ||
As a gas is heated in a rigid closed container its pressure will: - ✔✔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? - ✔✔Henry's Law
|| || ||
Atmospheric pressure can be measured in many ways. What is one atmosphere in
|| || || || || || || || || || || || ||
millimeters of mercury? - ✔✔760mmHg || || || ||
The _____________ of a specific gas in a mix is the portion of the total pressure
|| || || || || || || || || || || || || || || ||
exerted by that gas. - ✔✔Partial Pressure
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What is the absolute pressure at 17 msw (56 fsw)? - ✔✔2.7 ata
|| || || || || || || || || || || ||
What is the oxygen partial pressure (PO2) in EAN35 at a depth of 26 msw (85 fsw)? -
|| || || || || || || || || || || || || || || || || ||
✔✔1.3 ata ||
, If the oxygen partial pressure in your mix is 1.3 ata at a depth of 37 msw (122 fsw),
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what is the fraction of oxygen in the mix? - ✔✔.28
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What is the partial pressure of oxygen in air at a depth of 21 msw (69 fsw)? - ✔✔.65
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ata
The symptoms of nitrogen narcosis parallel those often seen in _____. - ✔✔Alcohol
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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
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pressure." - ✔✔Boyle's Law || || ||
True or False: A diver suffering from nitrogen narcosis will always be aware that
|| || || || || || || || || || || || || ||
he/she is impaired. - ✔✔False || || || ||
The mechanisms of nitrogen narcosis are thought to be similar to: - ✔✔Anesthesia
|| || || || || || || || || || || ||
The controlled release of pressure during ascent from a scuba dive is: -
|| || || || || || || || || || || || ||
✔✔Decompression
Which gas in air is essential to sustain life? - ✔✔Oxygen
|| || || || || || || || || ||
The primary waste product from the metabolism of oxygen is: - ✔✔Carbon Dioxide
|| || || || || || || || || || || ||
For most persons, symptoms of hypoxia begin to appear when the PO2: - ✔✔Falls
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below about 0.16 ata. || || ||
