NITROX CLASS PRACTICE EXAM
QUESTIONS AND ANSWERS
nitrox is only technical divers - Answer-false
according to dalton's law the pressure exerted by each gas in a mixture will add up to
the total pressure of the gas - Answer-true
a diver using EAN33 at a depth of 21msw (70fsw) has a 1.025 partial pressure of
oxygen - Answer-true
21/10=2.1
2.1+1=3.1
3.1*.33=1.025
OR
70/33=2.1
2.1+1=3.1
3.1*.33=1.025
it is your responsibility to know what breathing mixture is in your cylinder and to
maintain your equipment in a safe manner for use with nitrox - Answer-true
all RGBM divers should have a 3 min safety stop at 5 msw - Answer-true
the 40% rule is based on published peer reviewed research and is a definitive industry
standard - Answer-false
air is mostly comprised of oxygen and other miscellaneous gases with the least
abundant gas being Nitrogen - Answer-false
the ODIGTML order was originally determined to acount for the most potentially serious
physiological concerns facing dives - Answer-true
EAN41 is the best mix at a depth of 24.3 (80fsw) with PPO2 of 1.4 - Answer-false
math = 0.408 but cant round down
any equipment that is going to be exposed to a gas that contains greater than 40%
oxygen must be oxygen cleaned and free of hydrocarbons - Answer-true
nitorx analyzers never need maintenance or to be calibrated - Answer-false
the press of 22.7 msw is 2.27ATA - Answer-false
, using boyles law we can know that if you compared two 11 liter clyinders with different
pressures, the one with double the pressure also has greater volume of gas - Answer-
true
at 1 atm there is 79% nitrogen or partial pressure of .79. as the diver descend the
percentage of gas does not change by the partial pressure will increase with increased
pressure - Answer-true
the best mix for 28 msw is EAN 36 with pp of oxygen at 1.4 - Answer-true
henry's law addressess the quantity of gas that will dissolve and describes the rate at
which the gas will dissolve - Answer-false
using NOAA oxygen exposure limits the 24 limit at maximum recreational pressure (1.4)
is 200 minutes - Answer-false it is 180
pulmonary oxygen toxicity is significant concern for recreational nitrox divers - Answer-
fales
signs and symptoms of DCS do not vary and can be easily identified no matter the
injury or severity - Answer-false
using nitrox prevents nitrogen narcosis - Answer-false
the recreational diver's oxygen partial pressure range is from 0.21 to 1.4 with
contingency of 1.6 - Answer-true
it is safe for diver who has a has mixture of 34% to use a nitrox 36 table - Answer-false
oxygen is explosive and flammable and to start a fire you only need oxygen and heat -
Answer-false-also need fuel
the _____ in the air you breathe limits the time you can stay at depth - Answer-nitrogen
we say that nitrogen is a physiologically inert gas what does this mean - Answer-our
bodies do not use the nitrogen we breathe
in early 20th, a quantitative model for nitrogen loading and dive tables were developed
by - Answer-JS Haldane
credit for developing and introducing nitrox diving techniques for standard scuba goes to
- Answer-dr. morgan wells
the 2 most common used nitrox mixtures (aka NOAA Nitrox 1 & II - Answer-32% and
36% oxygen
QUESTIONS AND ANSWERS
nitrox is only technical divers - Answer-false
according to dalton's law the pressure exerted by each gas in a mixture will add up to
the total pressure of the gas - Answer-true
a diver using EAN33 at a depth of 21msw (70fsw) has a 1.025 partial pressure of
oxygen - Answer-true
21/10=2.1
2.1+1=3.1
3.1*.33=1.025
OR
70/33=2.1
2.1+1=3.1
3.1*.33=1.025
it is your responsibility to know what breathing mixture is in your cylinder and to
maintain your equipment in a safe manner for use with nitrox - Answer-true
all RGBM divers should have a 3 min safety stop at 5 msw - Answer-true
the 40% rule is based on published peer reviewed research and is a definitive industry
standard - Answer-false
air is mostly comprised of oxygen and other miscellaneous gases with the least
abundant gas being Nitrogen - Answer-false
the ODIGTML order was originally determined to acount for the most potentially serious
physiological concerns facing dives - Answer-true
EAN41 is the best mix at a depth of 24.3 (80fsw) with PPO2 of 1.4 - Answer-false
math = 0.408 but cant round down
any equipment that is going to be exposed to a gas that contains greater than 40%
oxygen must be oxygen cleaned and free of hydrocarbons - Answer-true
nitorx analyzers never need maintenance or to be calibrated - Answer-false
the press of 22.7 msw is 2.27ATA - Answer-false
, using boyles law we can know that if you compared two 11 liter clyinders with different
pressures, the one with double the pressure also has greater volume of gas - Answer-
true
at 1 atm there is 79% nitrogen or partial pressure of .79. as the diver descend the
percentage of gas does not change by the partial pressure will increase with increased
pressure - Answer-true
the best mix for 28 msw is EAN 36 with pp of oxygen at 1.4 - Answer-true
henry's law addressess the quantity of gas that will dissolve and describes the rate at
which the gas will dissolve - Answer-false
using NOAA oxygen exposure limits the 24 limit at maximum recreational pressure (1.4)
is 200 minutes - Answer-false it is 180
pulmonary oxygen toxicity is significant concern for recreational nitrox divers - Answer-
fales
signs and symptoms of DCS do not vary and can be easily identified no matter the
injury or severity - Answer-false
using nitrox prevents nitrogen narcosis - Answer-false
the recreational diver's oxygen partial pressure range is from 0.21 to 1.4 with
contingency of 1.6 - Answer-true
it is safe for diver who has a has mixture of 34% to use a nitrox 36 table - Answer-false
oxygen is explosive and flammable and to start a fire you only need oxygen and heat -
Answer-false-also need fuel
the _____ in the air you breathe limits the time you can stay at depth - Answer-nitrogen
we say that nitrogen is a physiologically inert gas what does this mean - Answer-our
bodies do not use the nitrogen we breathe
in early 20th, a quantitative model for nitrogen loading and dive tables were developed
by - Answer-JS Haldane
credit for developing and introducing nitrox diving techniques for standard scuba goes to
- Answer-dr. morgan wells
the 2 most common used nitrox mixtures (aka NOAA Nitrox 1 & II - Answer-32% and
36% oxygen
