Enriched Air Nitrox (SC-EAN)
1. Remaining within the recommended limiting ppo2 of 1.4 bar helps nitrox divers to avoid:
!@#$$$$$$$$$$%
A) Helium Narcosis
B) Oxygen Toxicity
C) Decompression Illness
D) Nitrogen Narcosis - (ANSWERS)Oxygen Toxicity
2. A common misconception is, that compared to air, Nitrox enables Divers to dive:
A) More shallow
B) Longer
C) Deeper
D) Shorter - (ANSWERS)Deeper
3. Diving Nitrox has which potential to provide?
A) longer no-decompression limits, longer repetitive dives
B) shorter decompression limits, shorter repetitive dives
C) longer decompression limits, shorter decompression dives
D) longer no-decompression dives, shorter repetitive dives - (ANSWERS)longer no-
decompression limits, longer repetitive dives
4. The air that we breathe consist mainly of:
A) Oxygen 78%/Nitrogen 21%
B) 50% Nitrogen/ 50% Oxygen
C) 100% Oxygen
D) Oxygen 21%/ Nitrogen 78% - (ANSWERS)Oxygen 21%/ Nitrogen 78%
5. To make sure the dive equipment you presently own may be suitable for nitrox, you have
to:
A) Check with your SSI Dive Professional if your equipment needs special
preparation/modification
B) do nothing, because if its good for air its good for Nitrox
C) do nothing, because it is high quality anyways
D) replace all seats and O-Rings - (ANSWERS)Check with your SSI Dive Professional
if your equipment needs special preparation/modification
6. Is it true, that Nitrox is designed for Ultra Deep diving?
A) No, Nitrox has more restrictive depth limitations than air
, Enriched Air Nitrox (SC-EAN)
B) It doesn't matter if you use Air, Nitrox or any other Gas, both have the!@#$$$$$$$$$$%
same depth
limitations
C) Yes, with Nitrox you can dive much deeper than with air
D) Yes, but only in warm water - (ANSWERS)No, Nitrox has more restrictive depth
limitations than air
7. The Nitrox mixture which can be used at any depth within the recommended
recreational depth limit of 30 meters is:
A) EAN 32
B) EAN 36
C) EAN40
D) All ANSWERS are correct - (ANSWERS)EAN 32
8. While diving Nitrox you can improve your safety by:
A) using helium computers
B) by using the no-deco-limits of an air computer or air tables
C) using Nitrox computers set to Nitrox
D) using Nitrox tables - (ANSWERS)by using the no-deco-limits of an air computer
or air tables
9. The two most commonly used Nitrox mixtures in recreational diving are:
A) EAN 21/ EAN79
B) EAN 80/ EAN 20
C) EAN 50/ EAN 60
D) EAN 32/ EAN 36 - (ANSWERS)EAN 32/ EAN 36
10. Nitrox and the acronym eanx solely refer to mixtures with oxygen concentrations (FO2)
higher than:
A) 36%
B) 21%
C) 32%
D) 40% - (ANSWERS)21%
11. The major benefit of diving with nitrox is that it has a lower concentration of the gas which
limits our time at depth. This gas is:
A) Air
B) Nitrox
C) Oxygen
1. Remaining within the recommended limiting ppo2 of 1.4 bar helps nitrox divers to avoid:
!@#$$$$$$$$$$%
A) Helium Narcosis
B) Oxygen Toxicity
C) Decompression Illness
D) Nitrogen Narcosis - (ANSWERS)Oxygen Toxicity
2. A common misconception is, that compared to air, Nitrox enables Divers to dive:
A) More shallow
B) Longer
C) Deeper
D) Shorter - (ANSWERS)Deeper
3. Diving Nitrox has which potential to provide?
A) longer no-decompression limits, longer repetitive dives
B) shorter decompression limits, shorter repetitive dives
C) longer decompression limits, shorter decompression dives
D) longer no-decompression dives, shorter repetitive dives - (ANSWERS)longer no-
decompression limits, longer repetitive dives
4. The air that we breathe consist mainly of:
A) Oxygen 78%/Nitrogen 21%
B) 50% Nitrogen/ 50% Oxygen
C) 100% Oxygen
D) Oxygen 21%/ Nitrogen 78% - (ANSWERS)Oxygen 21%/ Nitrogen 78%
5. To make sure the dive equipment you presently own may be suitable for nitrox, you have
to:
A) Check with your SSI Dive Professional if your equipment needs special
preparation/modification
B) do nothing, because if its good for air its good for Nitrox
C) do nothing, because it is high quality anyways
D) replace all seats and O-Rings - (ANSWERS)Check with your SSI Dive Professional
if your equipment needs special preparation/modification
6. Is it true, that Nitrox is designed for Ultra Deep diving?
A) No, Nitrox has more restrictive depth limitations than air
, Enriched Air Nitrox (SC-EAN)
B) It doesn't matter if you use Air, Nitrox or any other Gas, both have the!@#$$$$$$$$$$%
same depth
limitations
C) Yes, with Nitrox you can dive much deeper than with air
D) Yes, but only in warm water - (ANSWERS)No, Nitrox has more restrictive depth
limitations than air
7. The Nitrox mixture which can be used at any depth within the recommended
recreational depth limit of 30 meters is:
A) EAN 32
B) EAN 36
C) EAN40
D) All ANSWERS are correct - (ANSWERS)EAN 32
8. While diving Nitrox you can improve your safety by:
A) using helium computers
B) by using the no-deco-limits of an air computer or air tables
C) using Nitrox computers set to Nitrox
D) using Nitrox tables - (ANSWERS)by using the no-deco-limits of an air computer
or air tables
9. The two most commonly used Nitrox mixtures in recreational diving are:
A) EAN 21/ EAN79
B) EAN 80/ EAN 20
C) EAN 50/ EAN 60
D) EAN 32/ EAN 36 - (ANSWERS)EAN 32/ EAN 36
10. Nitrox and the acronym eanx solely refer to mixtures with oxygen concentrations (FO2)
higher than:
A) 36%
B) 21%
C) 32%
D) 40% - (ANSWERS)21%
11. The major benefit of diving with nitrox is that it has a lower concentration of the gas which
limits our time at depth. This gas is:
A) Air
B) Nitrox
C) Oxygen
