PADI EANx questions with verified answers
"Enriched Air" is Ans✓✓✓ a mixture of oxygen and nitrogen with more than 21%
oxygen
Advantages of using an enriched air dive computer for enriched air diving include
(check all that apply): Ans✓✓✓ providing maximum no stop time by combining
EANx and multilevel diving
the ability to warn you if you exceed your maximum depth.
simplifying dive planning
After analyzing enriched air, you should compare the oxygen percent with
Ans✓✓✓ the percentage marked on the contents sticker or tag
Based on broadly accepted international dive community practices, enriched air
cylinders should have the following markings/ colors/ tags (check all that apply):
Ans✓✓✓ Yellow cylinders should have a 10 cm/ 4 in green band at the should
with "Enriched Air," "Enriched Air Nitrox," "Nitrox" or similar designation.
The cylinder should have a standard visual inspection sticker.
The cylinder should have a contents sticker (decal) or tag.
The cylinder should have sticker (decal) to indicate whether it is oxygen service
rated.
Enriched air requires a dedicated cylinder because (check all that apply):
Ans✓✓✓ it can be hazardous to unknowingly dive with enriched air.
it can be hazardous to blend enriched air in a conventional air cylinder
Enriched air_________ the no stop limits compared to air Ans✓✓✓ extends
, Exposure to increased oxygen partial pressure can make your allowable dive time:
Ans✓✓✓ shorter
If a diver is suspected of having DCI after a dive using enriched air, you should
(check all that apply): Ans✓✓✓ Contact local emergency personnel and diver
emergency services.
Administer emergency oxygen and first aid as you normally would.
If a diver using enriched air convulses underwater, you should attempy to give the
diver regular air from a pony bottle. Ans✓✓✓ False
If an oxygen services rated enriched air cylinder is filled with standard
compressed air, you should: Ans✓✓✓ have it serviced by someone qualified to
work on enriched air equipment
If you accidentally exceed the oxygen exposure limits for your computer, you
should (check all that apply): Ans✓✓✓ ascend immediately but slowly and end
the dive.
not dive for 24 hours, or as stipulated by the manufacturer.
If you experience symptoms of oxygen toxicity, you should ascend immediately
and end the dive. Ans✓✓✓ True
If you forget to set your enriched air computer before a dive (check all that apply):
Ans✓✓✓ the computer enters an error mode.
you may have to wait 12 hours before you use it again
"Enriched Air" is Ans✓✓✓ a mixture of oxygen and nitrogen with more than 21%
oxygen
Advantages of using an enriched air dive computer for enriched air diving include
(check all that apply): Ans✓✓✓ providing maximum no stop time by combining
EANx and multilevel diving
the ability to warn you if you exceed your maximum depth.
simplifying dive planning
After analyzing enriched air, you should compare the oxygen percent with
Ans✓✓✓ the percentage marked on the contents sticker or tag
Based on broadly accepted international dive community practices, enriched air
cylinders should have the following markings/ colors/ tags (check all that apply):
Ans✓✓✓ Yellow cylinders should have a 10 cm/ 4 in green band at the should
with "Enriched Air," "Enriched Air Nitrox," "Nitrox" or similar designation.
The cylinder should have a standard visual inspection sticker.
The cylinder should have a contents sticker (decal) or tag.
The cylinder should have sticker (decal) to indicate whether it is oxygen service
rated.
Enriched air requires a dedicated cylinder because (check all that apply):
Ans✓✓✓ it can be hazardous to unknowingly dive with enriched air.
it can be hazardous to blend enriched air in a conventional air cylinder
Enriched air_________ the no stop limits compared to air Ans✓✓✓ extends
, Exposure to increased oxygen partial pressure can make your allowable dive time:
Ans✓✓✓ shorter
If a diver is suspected of having DCI after a dive using enriched air, you should
(check all that apply): Ans✓✓✓ Contact local emergency personnel and diver
emergency services.
Administer emergency oxygen and first aid as you normally would.
If a diver using enriched air convulses underwater, you should attempy to give the
diver regular air from a pony bottle. Ans✓✓✓ False
If an oxygen services rated enriched air cylinder is filled with standard
compressed air, you should: Ans✓✓✓ have it serviced by someone qualified to
work on enriched air equipment
If you accidentally exceed the oxygen exposure limits for your computer, you
should (check all that apply): Ans✓✓✓ ascend immediately but slowly and end
the dive.
not dive for 24 hours, or as stipulated by the manufacturer.
If you experience symptoms of oxygen toxicity, you should ascend immediately
and end the dive. Ans✓✓✓ True
If you forget to set your enriched air computer before a dive (check all that apply):
Ans✓✓✓ the computer enters an error mode.
you may have to wait 12 hours before you use it again
