SDI Computer Nitrox 2025 LATEST EXAM/ ACTUAL QUESTIONS
WITH CORRECT VERIFIED ANSWERS GRADED A+
1. True or False. Oxygen Enriched True
Air is a term some divers use to
refer to Nitrox.
2. The air we normally breathe Nitrogen and Oxygen
consists primarily of:
3. A mixture of nitrogen and oxy- Enriched Air, Enriched Air Nitrox, Nitrox,
gen in which the percentage Etc.
of oxygen is greater than that
found in air is generally called:
4. The person who creates the Ni- Blender
trox used to fill scuba cylinders
is referred to as a:
5. Which of the following is not a EAN21
Nitrox mixture? EAN24, EAN21,
EAN40
6. The primary benefits of using Longer bottom times and shorter surface
Nitrox include: intervals
7. During any 24-hour period, you 150 Minutes or 2.5 hours
can be exposed to a Nitrox mix-
ture at its Maximum Operating
Depth (MOD) for up to:
8. True or False. Dive computers False
work by monitoring the pres-
ences of so-called 'silent bub-
bles using ultrasound.
9. What may happen if you go too You may not be able to make a direct as-
deep or stay too long? cent to the surface without substantially in-
creasing your risk of decompression sick-
ness and your dive computer may require
you to make a series of decompression
stops
1/6
, SDI Computer Nitrox 2025 LATEST EXAM
10. A decompression stop is: Pausing at a fixed depth for a specified
period of time to allow excess nitrogen to
exit you body more slowly
11. To properly engage in decom- Specialized training, Additional equip-
pression diving requires: ment, and Topside support
12. Decompression sickness usu- Nitrogen, ascend
ally occurs when you have an
excess amount of __________
in your body and you ________
too quickly.
13. The most common symptoms Pain in the joints, Numbness and paraly-
of decompression sickness can sis, and Loss of balance
include, but are not limited to:
14. The most important first-aid Administration of pure oxygen
procedure for a diver suspect-
ed of suffering from decompres-
sion sickness is:
15. Once a diver suspected of Recompression in a hyperbaric chamber
suffering from decompression
sickness has been transport-
ed to a medical facility, proper
treatment will primarily involve:
16. What is the minimum concen- 16 percent
tration of oxygen required to
maintain consciousness at sea
level?
17. The maximum percentage of 40 percent
oxygen that sport divers use in
a Nitrox mixture is:
18. 6 m/20 ft
2/6
WITH CORRECT VERIFIED ANSWERS GRADED A+
1. True or False. Oxygen Enriched True
Air is a term some divers use to
refer to Nitrox.
2. The air we normally breathe Nitrogen and Oxygen
consists primarily of:
3. A mixture of nitrogen and oxy- Enriched Air, Enriched Air Nitrox, Nitrox,
gen in which the percentage Etc.
of oxygen is greater than that
found in air is generally called:
4. The person who creates the Ni- Blender
trox used to fill scuba cylinders
is referred to as a:
5. Which of the following is not a EAN21
Nitrox mixture? EAN24, EAN21,
EAN40
6. The primary benefits of using Longer bottom times and shorter surface
Nitrox include: intervals
7. During any 24-hour period, you 150 Minutes or 2.5 hours
can be exposed to a Nitrox mix-
ture at its Maximum Operating
Depth (MOD) for up to:
8. True or False. Dive computers False
work by monitoring the pres-
ences of so-called 'silent bub-
bles using ultrasound.
9. What may happen if you go too You may not be able to make a direct as-
deep or stay too long? cent to the surface without substantially in-
creasing your risk of decompression sick-
ness and your dive computer may require
you to make a series of decompression
stops
1/6
, SDI Computer Nitrox 2025 LATEST EXAM
10. A decompression stop is: Pausing at a fixed depth for a specified
period of time to allow excess nitrogen to
exit you body more slowly
11. To properly engage in decom- Specialized training, Additional equip-
pression diving requires: ment, and Topside support
12. Decompression sickness usu- Nitrogen, ascend
ally occurs when you have an
excess amount of __________
in your body and you ________
too quickly.
13. The most common symptoms Pain in the joints, Numbness and paraly-
of decompression sickness can sis, and Loss of balance
include, but are not limited to:
14. The most important first-aid Administration of pure oxygen
procedure for a diver suspect-
ed of suffering from decompres-
sion sickness is:
15. Once a diver suspected of Recompression in a hyperbaric chamber
suffering from decompression
sickness has been transport-
ed to a medical facility, proper
treatment will primarily involve:
16. What is the minimum concen- 16 percent
tration of oxygen required to
maintain consciousness at sea
level?
17. The maximum percentage of 40 percent
oxygen that sport divers use in
a Nitrox mixture is:
18. 6 m/20 ft
2/6
