SDI Computer Nitrox Latest Questions With
Correct Solutions| Already Graded A| Ace
Your Grades.
1. True or False. Oxygen Enriched Air is a term some divers use to refer to
Nitrox. - Correct Answer-True
2. The air we normally breathe consists primarily of: - Correct Answer-
Nitrogen and Oxygen
3. A mixture of nitrogen and oxygen in which the percentage of oxygen is
greater than that found in air is generally called: - Correct Answer-
Enriched Air, Enriched Air Nitrox, Nitrox, Etc.
4. The person who creates the Nitrox used to fill scuba cylinders is referred
to as a: - Correct Answer-Blender
5. Which of the following is not a Nitrox mixture? EAN24, EAN21, EAN40 -
Correct Answer-EAN21
6. The primary benefits of using Nitrox include: - Correct Answer-Longer
bottom times and shorter surface intervals
7. During any 24-hour period, you can be exposed to a Nitrox mixture at its
Maximum Operating Depth (MOD) for up to: - Correct Answer-150
Minutes or 2.5 hours
8. True or False. Dive computers work by monitoring the presences of so-
called 'silent bubbles using ultrasound. - Correct Answer-False
9. What may happen if you go too deep or stay too long? - Correct Answer-
You may not be able to make a direct ascent to the surface without
substantially increasing your risk of decompression sickness and your
dive computer may require you to make a series of decompression
stops
, 10. A decompression stop is: - Correct Answer-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 decompression diving requires: - Correct
Answer-Specialized training, Additional equipment, and Topside support
12. Decompression sickness usually occurs when you have an excess
amount of __________ in your body and you ________ too quickly. -
Correct Answer-Nitrogen, ascend
13. The most common symptoms of decompression sickness can
include, but are not limited to: - Correct Answer-Pain in the joints,
Numbness and paralysis, and Loss of balance
14. The most important first-aid procedure for a diver suspected of
suffering from decompression sickness is: - Correct Answer-
Administration of pure oxygen
15. Once a diver suspected of suffering from decompression sickness
has been transported to a medical facility, proper treatment will primarily
involve: - Correct Answer-Recompression in a hyperbaric chamber
16. What is the minimum concentration of oxygen required to maintain
consciousness at sea level? - Correct Answer-16 percent
17. The maximum percentage of oxygen that sport divers use in a Nitrox
mixture is: - Correct Answer-40 percent
18. What is the maximum recommended depth for using 100 percent
oxygen? - Correct Answer-6 m/20 ft
19. The term EAN32 refers to a Nitrox mixture: - Correct Answer-In which
the Fraction of Oxygen (FO2) is 32 percent
20. The MOD for EAN32 is: - Correct Answer-40 m/132 ft
21. True or False. The term MOD stands for Maximum Operating Depth.
- Correct Answer-True
Correct Solutions| Already Graded A| Ace
Your Grades.
1. True or False. Oxygen Enriched Air is a term some divers use to refer to
Nitrox. - Correct Answer-True
2. The air we normally breathe consists primarily of: - Correct Answer-
Nitrogen and Oxygen
3. A mixture of nitrogen and oxygen in which the percentage of oxygen is
greater than that found in air is generally called: - Correct Answer-
Enriched Air, Enriched Air Nitrox, Nitrox, Etc.
4. The person who creates the Nitrox used to fill scuba cylinders is referred
to as a: - Correct Answer-Blender
5. Which of the following is not a Nitrox mixture? EAN24, EAN21, EAN40 -
Correct Answer-EAN21
6. The primary benefits of using Nitrox include: - Correct Answer-Longer
bottom times and shorter surface intervals
7. During any 24-hour period, you can be exposed to a Nitrox mixture at its
Maximum Operating Depth (MOD) for up to: - Correct Answer-150
Minutes or 2.5 hours
8. True or False. Dive computers work by monitoring the presences of so-
called 'silent bubbles using ultrasound. - Correct Answer-False
9. What may happen if you go too deep or stay too long? - Correct Answer-
You may not be able to make a direct ascent to the surface without
substantially increasing your risk of decompression sickness and your
dive computer may require you to make a series of decompression
stops
, 10. A decompression stop is: - Correct Answer-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 decompression diving requires: - Correct
Answer-Specialized training, Additional equipment, and Topside support
12. Decompression sickness usually occurs when you have an excess
amount of __________ in your body and you ________ too quickly. -
Correct Answer-Nitrogen, ascend
13. The most common symptoms of decompression sickness can
include, but are not limited to: - Correct Answer-Pain in the joints,
Numbness and paralysis, and Loss of balance
14. The most important first-aid procedure for a diver suspected of
suffering from decompression sickness is: - Correct Answer-
Administration of pure oxygen
15. Once a diver suspected of suffering from decompression sickness
has been transported to a medical facility, proper treatment will primarily
involve: - Correct Answer-Recompression in a hyperbaric chamber
16. What is the minimum concentration of oxygen required to maintain
consciousness at sea level? - Correct Answer-16 percent
17. The maximum percentage of oxygen that sport divers use in a Nitrox
mixture is: - Correct Answer-40 percent
18. What is the maximum recommended depth for using 100 percent
oxygen? - Correct Answer-6 m/20 ft
19. The term EAN32 refers to a Nitrox mixture: - Correct Answer-In which
the Fraction of Oxygen (FO2) is 32 percent
20. The MOD for EAN32 is: - Correct Answer-40 m/132 ft
21. True or False. The term MOD stands for Maximum Operating Depth.
- Correct Answer-True
