Nitrox Certification Course– Questions With Accurate
Answers
What is Nitrox Correct Answer - Nitrox contains a higher percentage of
oxygen, unlike air which normally contains approximately 79 percent
nitrogen and 21 percent oxygen.
Nitrox primary benefits Correct Answer - extend your bottom times and
to shorten your surface intervals significantly compared to your previous air-
dives
what is EAN32: Correct Answer - enriched air nitrox with 32% oxygen :
68% nitrogen
FO2 is 32 (Fraction of Oxygen)
what is EAN36: Correct Answer - enriched air nitrox with 36% oxygen :
64% nitrogen
How long, in any 24-hour period, you can be exposed to a Nitrox mixture at its
maximum operating depth (MOD)? Correct Answer - you will have a
cumulative time limit for oxygen exposure at the maximum operating
depth(MOD) of 2:30 hours in any 24-hour period
How long, in a single dive, can one be exposed to a Nitrox mixture at its
maximum operating depth(MOD) Correct Answer - the oxygen exposure
time limit for a single dive is 45 minutes at a given maximum operating
depth(MOD)
What is Advanced Nitrox Correct Answer - Gas mixtures containing
more than 40% oxygen are sometimes called Advanced Nitrox or Technical
Nitrox.
Normal Air that we breathe is comprised of what % oxygen and nitrogen
Correct Answer - 21% oxygen and 79% nitrogen
How can a dive computer help you avoid decompression sickness? Correct
Answer - 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
What may happen if you go too deep or stay too long during a dive? Correct
Answer - you must stop at a particular depth to allow the excess nitrogen
in your body time to escape without causing problems.
What does the term decompression stop mean? Correct Answer - Your
computer may require you to make one stop or a series of stops, commonly
known as decompression stops.
What are three reasons why sport divers should avoid decompression diving?
Correct Answer - decompression diving requires specialized training,
additional equipment, and topside support.
What is the primary cause of decompression sickness? Correct Answer -
occurs when you have an excess amount of nitrogen in your body and you
ascend too quickly. The nitrogen comes out of a solution and forms a bubble
thus disrupting the flow of blood in whatever part of the body it is located
What are the most common symptoms of decompression sickness? Correct
Answer - pain in the joints, numbness, paralysis, loss of balance, muscle
weakness, and impaired thinking
What is the recommended first aid for decompression sickness? Correct
Answer - treating the diver for shock by laying them down, provide an
injured diver pure oxygen as soon as possible and transport to a hyperbaric
chamber and keeping them either from being to cold or too warm
What is the minimum concentration of oxygen required to maintain
consciousness at sea level? Correct Answer - gas mixtures containing as
little as 16% oxygen
What is the maximum percentage of oxygen that sport divers use in a Nitrox
mixture? Correct Answer - 40%
What is the maximum recommended depth for using 100 percent oxygen?
Correct Answer - 6 meters
Answers
What is Nitrox Correct Answer - Nitrox contains a higher percentage of
oxygen, unlike air which normally contains approximately 79 percent
nitrogen and 21 percent oxygen.
Nitrox primary benefits Correct Answer - extend your bottom times and
to shorten your surface intervals significantly compared to your previous air-
dives
what is EAN32: Correct Answer - enriched air nitrox with 32% oxygen :
68% nitrogen
FO2 is 32 (Fraction of Oxygen)
what is EAN36: Correct Answer - enriched air nitrox with 36% oxygen :
64% nitrogen
How long, in any 24-hour period, you can be exposed to a Nitrox mixture at its
maximum operating depth (MOD)? Correct Answer - you will have a
cumulative time limit for oxygen exposure at the maximum operating
depth(MOD) of 2:30 hours in any 24-hour period
How long, in a single dive, can one be exposed to a Nitrox mixture at its
maximum operating depth(MOD) Correct Answer - the oxygen exposure
time limit for a single dive is 45 minutes at a given maximum operating
depth(MOD)
What is Advanced Nitrox Correct Answer - Gas mixtures containing
more than 40% oxygen are sometimes called Advanced Nitrox or Technical
Nitrox.
Normal Air that we breathe is comprised of what % oxygen and nitrogen
Correct Answer - 21% oxygen and 79% nitrogen
How can a dive computer help you avoid decompression sickness? Correct
Answer - 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
What may happen if you go too deep or stay too long during a dive? Correct
Answer - you must stop at a particular depth to allow the excess nitrogen
in your body time to escape without causing problems.
What does the term decompression stop mean? Correct Answer - Your
computer may require you to make one stop or a series of stops, commonly
known as decompression stops.
What are three reasons why sport divers should avoid decompression diving?
Correct Answer - decompression diving requires specialized training,
additional equipment, and topside support.
What is the primary cause of decompression sickness? Correct Answer -
occurs when you have an excess amount of nitrogen in your body and you
ascend too quickly. The nitrogen comes out of a solution and forms a bubble
thus disrupting the flow of blood in whatever part of the body it is located
What are the most common symptoms of decompression sickness? Correct
Answer - pain in the joints, numbness, paralysis, loss of balance, muscle
weakness, and impaired thinking
What is the recommended first aid for decompression sickness? Correct
Answer - treating the diver for shock by laying them down, provide an
injured diver pure oxygen as soon as possible and transport to a hyperbaric
chamber and keeping them either from being to cold or too warm
What is the minimum concentration of oxygen required to maintain
consciousness at sea level? Correct Answer - gas mixtures containing as
little as 16% oxygen
What is the maximum percentage of oxygen that sport divers use in a Nitrox
mixture? Correct Answer - 40%
What is the maximum recommended depth for using 100 percent oxygen?
Correct Answer - 6 meters
