SDI Computer Nitrox exam questions with
correct answers
True or False. Oxygen Enriched Air is a term some divers use to refer to
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Nitrox. - CORRECT ANSWERS ✔✔True
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The air we normally breathe consists primarily of: - CORRECT ANSWERS
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✔✔Nitrogen and Oxygen
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A mixture of nitrogen and oxygen in which the percentage of oxygen is
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greater than that found in air is generally called: - CORRECT ANSWERS
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✔✔Enriched Air, Enriched Air Nitrox, Nitrox, Etc.
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The person who creates the Nitrox used to fill scuba cylinders is referred to
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as a: - CORRECT ANSWERS ✔✔Blender
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Which of the following is not a Nitrox mixture? EAN24, EAN21, EAN40 -
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CORRECT ANSWERS ✔✔EAN21
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The primary benefits of using Nitrox include: - CORRECT ANSWERS
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✔✔Longer bottom times and shorter surface intervals
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During any 24-hour period, you can be exposed to a Nitrox mixture at its
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Maximum Operating Depth (MOD) for up to: - CORRECT ANSWERS ✔✔150
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Minutes or 2.5 hours
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, True or False. Dive computers work by monitoring the presences of so-called
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'silent bubbles using ultrasound. - CORRECT ANSWERS ✔✔False
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What may happen if you go too deep or stay too long? - CORRECT ANSWERS
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✔✔You may not be able to make a direct ascent to the surface without
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substantially increasing your risk of decompression sickness and your dive
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computer may require you to make a series of decompression stops
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A decompression stop is: - CORRECT ANSWERS ✔✔Pausing at a fixed depth
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for a specified period of time to allow excess nitrogen to exit you body more
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slowly
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To properly engage in decompression diving requires: - CORRECT ANSWERS
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✔✔Specialized training, Additional equipment, and Topside support
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Decompression sickness usually occurs when you have an excess amount of
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__________ in your body and you ________ too quickly. - CORRECT ANSWERS
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✔✔Nitrogen, ascend
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The most common symptoms of decompression sickness can include, but are
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not limited to: - CORRECT ANSWERS ✔✔Pain in the joints, Numbness and
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paralysis, and Loss of balance
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The most important first-aid procedure for a diver suspected of suffering
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from decompression sickness is: - CORRECT ANSWERS ✔✔Administration of
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pure oxygen
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correct answers
True or False. Oxygen Enriched Air is a term some divers use to refer to
/ / / / / / / / / / / / / /
Nitrox. - CORRECT ANSWERS ✔✔True
/ / / / /
The air we normally breathe consists primarily of: - CORRECT ANSWERS
/ / / / / / / / / /
✔✔Nitrogen and Oxygen
/ / /
A mixture of nitrogen and oxygen in which the percentage of oxygen is
/ / / / / / / / / / / /
greater than that found in air is generally called: - CORRECT ANSWERS
/ / / / / / / / / / / /
✔✔Enriched Air, Enriched Air Nitrox, Nitrox, Etc.
/ / / / / / /
The person who creates the Nitrox used to fill scuba cylinders is referred to
/ / / / / / / / / / / / /
as a: - CORRECT ANSWERS ✔✔Blender
/ / / / / /
Which of the following is not a Nitrox mixture? EAN24, EAN21, EAN40 -
/ / / / / / / / / / / /
CORRECT ANSWERS ✔✔EAN21
/ / /
The primary benefits of using Nitrox include: - CORRECT ANSWERS
/ / / / / / / / /
✔✔Longer bottom times and shorter surface intervals
/ / / / / / /
During any 24-hour period, you can be exposed to a Nitrox mixture at its
/ / / / / / / / / / / / /
Maximum Operating Depth (MOD) for up to: - CORRECT ANSWERS ✔✔150
/ / / / / / / / / / /
Minutes or 2.5 hours
/ / / /
, True or False. Dive computers work by monitoring the presences of so-called
/ / / / / / / / / / /
'silent bubbles using ultrasound. - CORRECT ANSWERS ✔✔False
/ / / / / / / /
What may happen if you go too deep or stay too long? - CORRECT ANSWERS
/ / / / / / / / / / / / / /
✔✔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
/ / / / / / / / / / /
A decompression stop is: - CORRECT ANSWERS ✔✔Pausing at a fixed depth
/ / / / / / / / / / /
for a specified period of time to allow excess nitrogen to exit you body more
/ / / / / / / / / / / / / / /
slowly
/
To properly engage in decompression diving requires: - CORRECT ANSWERS
/ / / / / / / / /
✔✔Specialized training, Additional equipment, and Topside support
/ / / / / / /
Decompression sickness usually occurs when you have an excess amount of
/ / / / / / / / / /
__________ in your body and you ________ too quickly. - CORRECT ANSWERS
/ / / / / / / / / / / /
✔✔Nitrogen, ascend
/ /
The most common symptoms of decompression sickness can include, but are
/ / / / / / / / / /
not limited to: - CORRECT ANSWERS ✔✔Pain in the joints, Numbness and
/ / / / / / / / / / / /
paralysis, and Loss of balance
/ / / / /
The most important first-aid procedure for a diver suspected of suffering
/ / / / / / / / / /
from decompression sickness is: - CORRECT ANSWERS ✔✔Administration of
/ / / / / / / / /
pure oxygen
/ /
