NAUI Nitrox Diver Final Exam.
Questions with Correct Verified
Answers. Latest 2026-2027. Graded A
_____ describes the relationship between absolute pressure and the
volume of a gas. - ANSBoyle's Law
After the gas is analyzed, a nitrox cylinder must be: - ANSLabled with its
contents
All components of the _______ are required for a fire to take place. -
ANSFire triangle
An essential operation in using an oxygen analyzer is - ANScalibrating it
An essential operation in using an oxygen analyzer is: - ANSCalibrating it.
An oxygen analyzer should display oxygen content to an accuracy of -
ANS1/10 of a percent
An oxygen analyzer should display oxygen content to an accuracy of: -
ANSOne-tenth of one percent
1
, Any equipment that is used with pure oxygen or an oxygen level above
______% must be cleaned for oxygen service - ANS40
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 - ANSBoyle's Law
At the first signs or symptoms of oxygen toxicity, a diver should: -
ANSTerminate the dive.
At what depth in the ocean is the absolute pressure 6.4 ata? - ANS54 msw
(178 fsw)
Benefits of nitrox include: - ANSExtended bottom time
Increased safety margins
Shorter surface intervals
Best mix to use for an oxygen partial pressure limit of 1.6 ata on a dive to
27 msw - ANSean 40
Breathing high partial pressures of oxygen can cause: - ANSConvulsions
Calculate the equivalent air depth for a 29 msw (95 fsw) dive using EAN36.
- ANS22 msw (71 fsw)
Continuous flow method - ANSinjects a measured flow of pure oxygen into
the air before it reaches the intake of the compressor
2
Questions with Correct Verified
Answers. Latest 2026-2027. Graded A
_____ describes the relationship between absolute pressure and the
volume of a gas. - ANSBoyle's Law
After the gas is analyzed, a nitrox cylinder must be: - ANSLabled with its
contents
All components of the _______ are required for a fire to take place. -
ANSFire triangle
An essential operation in using an oxygen analyzer is - ANScalibrating it
An essential operation in using an oxygen analyzer is: - ANSCalibrating it.
An oxygen analyzer should display oxygen content to an accuracy of -
ANS1/10 of a percent
An oxygen analyzer should display oxygen content to an accuracy of: -
ANSOne-tenth of one percent
1
, Any equipment that is used with pure oxygen or an oxygen level above
______% must be cleaned for oxygen service - ANS40
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 - ANSBoyle's Law
At the first signs or symptoms of oxygen toxicity, a diver should: -
ANSTerminate the dive.
At what depth in the ocean is the absolute pressure 6.4 ata? - ANS54 msw
(178 fsw)
Benefits of nitrox include: - ANSExtended bottom time
Increased safety margins
Shorter surface intervals
Best mix to use for an oxygen partial pressure limit of 1.6 ata on a dive to
27 msw - ANSean 40
Breathing high partial pressures of oxygen can cause: - ANSConvulsions
Calculate the equivalent air depth for a 29 msw (95 fsw) dive using EAN36.
- ANS22 msw (71 fsw)
Continuous flow method - ANSinjects a measured flow of pure oxygen into
the air before it reaches the intake of the compressor
2
