NITROX COMPREHENSIVE STUDY GUIDE
TESTED QUESTIONS AND VERIFIED
ANSWERS
●● Reducing amount of nitrogen means you can dive ------ to a given
depth or reduce ----- between dives
Answer: longer, required surface interval
●● excess nitrogen is the cause of -----
Answer: decompression sickness
●● Development of Nitrox began in what year? The same year the first
diving decompression tables were published
Answer: 1908
●● What year did NAUI indorse EANx and official accept certifications
from two specialized nitrox training agencies
Answer: 1992
●● What year did NAUI codify standards for enriched air nitrox training
and certification?
Answer: 1996
,●● Advantages of nitrox include...
-extended bottom times
-shorter surface intervals
increased safety factor when used with air tables
true or false?
Answer: true
●● TRUE or FALSE
Nitrox is the same as trimix and its used to reduce the effects of narcosis
that a diver might feel.
Answer: FALSE
●● Other terms for NOAA Nitrox I and II
Answer: I=EAN32, II-EAN36
●● TRUE or FALSE
All of these terms refer to the same breathing mixture
- EAN36
NOAA Nitrox II
Nitrox 36%
35% oxygen mixture
, Answer: TRUE
●● nitrox is a _____ breathing gas
Answer: mid-range
●● In _____ Paul Bert established that ____ liberated bubbles following
sudden decompression was the cause of decompression sickness
Answer: 1878, nitrogen
●● Nitrox provides the greatest advantages for dives in the _____ depth
range.
Answer: 15-33 m (50-110ft) depth
●● Pressure of gas is dependent on how the molecules strike the
container, pressure can be increased by____ it into a smaller container
and by increasing ____
Answer: compressing, temperature
●● More gas will dissolve at____ temperatures. The amount of gas that
will dissolve in the liquid is directly proportional to the ____ of the gas
on the liquid
Answer: Lower, pressure
●● TRUE OR FALSE
TESTED QUESTIONS AND VERIFIED
ANSWERS
●● Reducing amount of nitrogen means you can dive ------ to a given
depth or reduce ----- between dives
Answer: longer, required surface interval
●● excess nitrogen is the cause of -----
Answer: decompression sickness
●● Development of Nitrox began in what year? The same year the first
diving decompression tables were published
Answer: 1908
●● What year did NAUI indorse EANx and official accept certifications
from two specialized nitrox training agencies
Answer: 1992
●● What year did NAUI codify standards for enriched air nitrox training
and certification?
Answer: 1996
,●● Advantages of nitrox include...
-extended bottom times
-shorter surface intervals
increased safety factor when used with air tables
true or false?
Answer: true
●● TRUE or FALSE
Nitrox is the same as trimix and its used to reduce the effects of narcosis
that a diver might feel.
Answer: FALSE
●● Other terms for NOAA Nitrox I and II
Answer: I=EAN32, II-EAN36
●● TRUE or FALSE
All of these terms refer to the same breathing mixture
- EAN36
NOAA Nitrox II
Nitrox 36%
35% oxygen mixture
, Answer: TRUE
●● nitrox is a _____ breathing gas
Answer: mid-range
●● In _____ Paul Bert established that ____ liberated bubbles following
sudden decompression was the cause of decompression sickness
Answer: 1878, nitrogen
●● Nitrox provides the greatest advantages for dives in the _____ depth
range.
Answer: 15-33 m (50-110ft) depth
●● Pressure of gas is dependent on how the molecules strike the
container, pressure can be increased by____ it into a smaller container
and by increasing ____
Answer: compressing, temperature
●● More gas will dissolve at____ temperatures. The amount of gas that
will dissolve in the liquid is directly proportional to the ____ of the gas
on the liquid
Answer: Lower, pressure
●● TRUE OR FALSE
