Scuba Nitrox Quiz. Questions with
Correct Verified Answers. Latest 2026-
2027. Graded A
32% and 36% oxygen - ANSthe two most commonly used nitrox mixtures
aka Nitrox I and Nitrox II
A diver suffering from nitrogen narcosis will always be aware that he/she is
impaired - ANSFalse
A diver using EAN 32 makes a dive to 33msw 110fsw for 23 minutes. After
a surface interval of 2 hours, they make a second dive (also using EAN32)
to 23 msw 75 fsw. Using Naui EAN32 dive tables the adjusted max dive
time is - ANS11 minutes
A diver using EAN 33 at a depth of 21 msw (70fsw) has a 1.025 PP02 -
ANSTrue
A stuporous condition characterized by impaired mental and physical
performance and changes in mood and behavior is known as nitrogen
narcosis - ANSTrue
According to Dalton's law, the pressure exerted by each gas in a mixture
will add up to the total pressure of the gas - ANSTrue
1
, After the gas is analyzed and the cylinder is labeled, the diver must: -
ANSdocument the fill by completing an entry in the fill log
Air is mostly comprised of oxygen and other miscellaneous gases with the
least abundant gas being Nitrogen - ANSFalse
All RGBM dives should have a 3-minute safety stop at 5-msw (15fsw) -
ANSTrue
Any equipment that is going to be exposed to a gas that contains greater
than 40% oxygen must be oxygen cleaned and free of any hydrocarbons -
ANSTrue
Any equipment that is used with pure oxygen or an oxygen level above
_____ must be cleaned for oxygen service. Although you will not be using
nitrox mixtures above ______ oxygen, your cylinder should be oxygen
cleaned and identified as a nitrox cylinder because ______________ -
ANS40%, 40%, it may be subjected to pure oxygenat elevated pressures
when it is filled
Argon in the air is essential to sustain life - ANSFalse
At 1 ata there is 79% nitrogen or a partial pressure of 0.79 nitrogen as a
diver descends the percentage of the gas doesn't change but the partial
pressure of the gas will increase with increased pressure - ANSTrue
2
Correct Verified Answers. Latest 2026-
2027. Graded A
32% and 36% oxygen - ANSthe two most commonly used nitrox mixtures
aka Nitrox I and Nitrox II
A diver suffering from nitrogen narcosis will always be aware that he/she is
impaired - ANSFalse
A diver using EAN 32 makes a dive to 33msw 110fsw for 23 minutes. After
a surface interval of 2 hours, they make a second dive (also using EAN32)
to 23 msw 75 fsw. Using Naui EAN32 dive tables the adjusted max dive
time is - ANS11 minutes
A diver using EAN 33 at a depth of 21 msw (70fsw) has a 1.025 PP02 -
ANSTrue
A stuporous condition characterized by impaired mental and physical
performance and changes in mood and behavior is known as nitrogen
narcosis - ANSTrue
According to Dalton's law, the pressure exerted by each gas in a mixture
will add up to the total pressure of the gas - ANSTrue
1
, After the gas is analyzed and the cylinder is labeled, the diver must: -
ANSdocument the fill by completing an entry in the fill log
Air is mostly comprised of oxygen and other miscellaneous gases with the
least abundant gas being Nitrogen - ANSFalse
All RGBM dives should have a 3-minute safety stop at 5-msw (15fsw) -
ANSTrue
Any equipment that is going to be exposed to a gas that contains greater
than 40% oxygen must be oxygen cleaned and free of any hydrocarbons -
ANSTrue
Any equipment that is used with pure oxygen or an oxygen level above
_____ must be cleaned for oxygen service. Although you will not be using
nitrox mixtures above ______ oxygen, your cylinder should be oxygen
cleaned and identified as a nitrox cylinder because ______________ -
ANS40%, 40%, it may be subjected to pure oxygenat elevated pressures
when it is filled
Argon in the air is essential to sustain life - ANSFalse
At 1 ata there is 79% nitrogen or a partial pressure of 0.79 nitrogen as a
diver descends the percentage of the gas doesn't change but the partial
pressure of the gas will increase with increased pressure - ANSTrue
2
