ENRICHED AIR NITROX (SC-EAN)
EXAM QUESTIONS AND ANSWERS
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 - Correct Answers -Oxygen Toxicity
A common misconception is, that compared to air, Nitrox enables Divers to dive:
A) More shallow
B) Longer
C) Deeper
D) Shorter - Correct Answers -Deeper
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 - Correct Answers -longer
no-decompression limits, longer repetitive dives
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% - Correct Answers -Oxygen 21%/ Nitrogen 78%
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 - Correct Answers -Check with your SSI Dive
Professional if your equipment needs special preparation/modification
Is it true, that Nitrox is designed for Ultra Deep diving?
A) No, Nitrox has more restrictive depth limitations than air
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 - Correct Answers -No, Nitrox has more restrictive depth
limitations than air
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 - Correct Answers -EAN 32
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 - Correct Answers -by using the no-deco-limits of an air computer
or air tables
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 - Correct Answers -EAN 32/ EAN 36
Nitrox and the acronym EANx solely refer to mixtures with oxygen concentrations (FO2)
higher than:
A) 36%
B) 21%
C) 32%
D) 40% - Correct Answers -21%
EXAM QUESTIONS AND ANSWERS
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 - Correct Answers -Oxygen Toxicity
A common misconception is, that compared to air, Nitrox enables Divers to dive:
A) More shallow
B) Longer
C) Deeper
D) Shorter - Correct Answers -Deeper
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 - Correct Answers -longer
no-decompression limits, longer repetitive dives
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% - Correct Answers -Oxygen 21%/ Nitrogen 78%
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 - Correct Answers -Check with your SSI Dive
Professional if your equipment needs special preparation/modification
Is it true, that Nitrox is designed for Ultra Deep diving?
A) No, Nitrox has more restrictive depth limitations than air
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 - Correct Answers -No, Nitrox has more restrictive depth
limitations than air
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 - Correct Answers -EAN 32
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 - Correct Answers -by using the no-deco-limits of an air computer
or air tables
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 - Correct Answers -EAN 32/ EAN 36
Nitrox and the acronym EANx solely refer to mixtures with oxygen concentrations (FO2)
higher than:
A) 36%
B) 21%
C) 32%
D) 40% - Correct Answers -21%
