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Nitrox certification Questions and Answers
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Nitrox certification Questions and Answers
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Nitrox certification Questions and AnswersA mixture of nitrogen and oxygen in which the percentage of oxygen is greater than that
found in air is generally called: - ANSWER-all
Additional steps Nitrox divers can take to help avoid oxygen toxicity include all of the
following except: - ANSWER-Never exceed a PO2 of 2.0.
Decompression diving involves more risk than no-decompression diving, and without
the proper precautions can become extremely hazardous. - ANSWER-true
Decompression sickness usually occurs when you have an excess amount of
__________ in your body and you ________ too quickly. - ANSWER-Nitrogen, asend
Dive computers work by: - ANSWER-Calculating the approximate amount of excess
nitrogen present in your body, based on factors such as depth and time.
During any 24-hour period, you can be exposed to a Nitrox mixture at its Maximum
Operating Depth (MOD) for up to: - ANSWER-150 Min
EAN32 is a good choice for Nitrox diving because it provides a good combination of
safety and extended bottom time. - ANSWER-True
f you do not set your dive computer's FO2 prior to every dive: - ANSWER-all
First aid for decompression sickness can include: - ANSWER-Treating for shock.,
Administering pure oxygen.
How can a dive computer help you avoid decompression sickness? - ANSWER--When
you use a dive computer, it will calculate approximately the amount of nitrogen
absorbed by your body, and indicates when it is time to ascend and the rate at which it
is safest to ascend.
If you go too deep or stay too long, you may not be able to make a direct ascent to the
surface without substantially increasing your risk of decompression sickness. -
ANSWER-True
It is important for team members to be use the same Nitrox mixture so that they will
share a common MOD. - ANSWER-true
Nitrox is still relatively rare at most dive destinations and liveaboards. - ANSWER-false
Once a diver suspected of suffering from decompression has been transported to a
medical facility, proper treatment will primarily involve recompression in a hyperbaric
chamber. - ANSWER-True
, Oxygen toxicity is a physiological reaction of your body that occurs when you are
exposed to breathing mixtures containing: - ANSWER-High partial pressures of oxygen,
Lower partial pressures of oxygen for extended periods
Regulators that will be exposed to oxygen concentrations of less than 40 percent need
no special preparation unless required by manufacturer's specifications or local
laws/regulations. - ANSWER-True
State how long, in any 24-hour period, you can be exposed to a Nitrox mixture at its
Maximum Operating Depth (MOD)? - ANSWER--Also, over the course of a 24-hour
period, you will have a cumulative time limit for oxygen exposure at the maximum
operating depth of two and a half hours in any 24-hour period.
The air we normally breathe consists primarily of: - ANSWER-Nitrogen + Oxygen
The maximum partial pressure of oxygen (PO2) we use in Nitrox diving is: - ANSWER-
none
The maximum percentage of oxygen that sport divers use in a Nitrox mixture is: -
ANSWER-40%
The maximum recommended depth for using 100 percent oxygen is 6 m/20 ft. -
ANSWER-True
The minimum surface interval for Nitrox diving is 30 minutes; however, 60 minutes is
preferred. - ANSWER-True
The MOD for EAN32 is 30 m/99 ft. - ANSWER-False
The most common symptoms of decompression sickness can include, but are not
limited to, pain in the joints, numbness, paralysis, loss of balance, muscle weakness,
and impaired thinking. - ANSWER-True
The primary benefits of using Nitrox include longer bottom times and shorter surface
intervals. - ANSWER-True
The primary risk associated with Nitrox diving (as opposed to diving air) is carbon
monoxide (CO) poisoning. - ANSWER-False
The steps to follow when analyzing Nitrox cylinder content include: - ANSWER-all
The term blender refers to an individual who is qualified to: - ANSWER-create the Nitrox
used to fill scuba cylinders.
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