ENRICHED AIR NITROX EXPECTED ACTUAL EXAM
QUESTIONS WITH CORRECT ANSWERS (2026)
●● To make sure your personal equipment is suitable for nitrox, you
have to:
Answer: Ask your SSI Dive Center/Dive Professional if you equipment
needs special preparation/modification
●● Compared to air, nitrox has a higher concentration of:
Answer: Oxygen
●● Is it true, that nitrox is designed for ultra-deep diving?
Answer: No, nitrox has more restrictive depth limitations than air
●● A common misconception is that, when compared to air, nitrox
enable divers to dive:
Answer: deeper
●● While diving nitrox, you can improve your safety by:
Answer: using the no-decompression limits of an air computer or air
tables
, ●● The major benefit of diving with nitrox is that it has a lower
concentration of ___, which limits our time at depth.
Answer: nitrogen
●● The two most commonly used nitrox mixtures in recreational diving
are:
Answer: EAN32/EAN36
●● The recommended limiting pp0_2 and maximum limiting pp0_2 for
recreational nitrox dives are:
Answer: 1.4/1.6
●● What is the primary sign of CNS Oxygen Toxicity that can cause the
loss of the second stage drowning?
Answer: convulsions
●● What is the best way to compare the levels of oxygen found in
various types of breathing gas?
Answer: partial pressure of oxygen
●● If you notice symptoms of CNS oxygen toxicity in yourself or your
buddy while underwater, you should immediately begin:
Answer: a controlled ascent together
QUESTIONS WITH CORRECT ANSWERS (2026)
●● To make sure your personal equipment is suitable for nitrox, you
have to:
Answer: Ask your SSI Dive Center/Dive Professional if you equipment
needs special preparation/modification
●● Compared to air, nitrox has a higher concentration of:
Answer: Oxygen
●● Is it true, that nitrox is designed for ultra-deep diving?
Answer: No, nitrox has more restrictive depth limitations than air
●● A common misconception is that, when compared to air, nitrox
enable divers to dive:
Answer: deeper
●● While diving nitrox, you can improve your safety by:
Answer: using the no-decompression limits of an air computer or air
tables
, ●● The major benefit of diving with nitrox is that it has a lower
concentration of ___, which limits our time at depth.
Answer: nitrogen
●● The two most commonly used nitrox mixtures in recreational diving
are:
Answer: EAN32/EAN36
●● The recommended limiting pp0_2 and maximum limiting pp0_2 for
recreational nitrox dives are:
Answer: 1.4/1.6
●● What is the primary sign of CNS Oxygen Toxicity that can cause the
loss of the second stage drowning?
Answer: convulsions
●● What is the best way to compare the levels of oxygen found in
various types of breathing gas?
Answer: partial pressure of oxygen
●● If you notice symptoms of CNS oxygen toxicity in yourself or your
buddy while underwater, you should immediately begin:
Answer: a controlled ascent together
