Enriched air diver questions
and answers
2025(GUARANTEED
SUCCESS)
"Enriched air" is... - answer A mixture of oxygen and
nitrogen with more than 21% oxygen
The primary benefit of using enriched air is that it lets
you... - answer Dive longer
Enriched air _____ the no stop limits compared to air -
answer Extends
It is too simplistic to say enriched air is safer than air
when well within air no stop limits because enriched air
creates an oxygen hazard and the DCR rate is already very
low in recreational air diving - answer True
Using enriched air ____ narcosis when diving. - answer Has
no effect on
Advantages of using an enriched air dice computer for
enriched air diving include: - answer 1. Providing
maximum no stop time by combining EANx and multi level
diving
, 2. The ability to warn you if you exceed your maximum
depth
3. Simplifying dive planning
The primary concern regarding enriched air and scuba
equipment is: - answer That contact with high oxygen
content may cause fire, explosion or deterioration.
When using enriched air with up to 40% oxygen: - answer
1. Generally, you may use standard scuba equipment
2. Use of oxygen compatible lubricants is generally
recommended
3. Follow all manufacturer recommendations regarding
using their equipment with enriched air
Enriched air requires a dedicated cylinder because: -
answer 1. It can be hazardous to unknowingly dive with
enriched air
2. It can be hazardous to blend enriched air in a
conventional air cylinder
Based on broadly accepted international dive community
practices, enriched air cylinders should have the following
markings/colors/tags: - answer 1. Yellow cylinders should
have a 4 in green band at the shoulder with "Enriched Air,"
"Enriched Air Nitrox," "Nitrox" or a similar design
2. The cylinder should have a standard visual inspection
sticker
3. The cylinder should have a contents sticker (decal) or
tag
and answers
2025(GUARANTEED
SUCCESS)
"Enriched air" is... - answer A mixture of oxygen and
nitrogen with more than 21% oxygen
The primary benefit of using enriched air is that it lets
you... - answer Dive longer
Enriched air _____ the no stop limits compared to air -
answer Extends
It is too simplistic to say enriched air is safer than air
when well within air no stop limits because enriched air
creates an oxygen hazard and the DCR rate is already very
low in recreational air diving - answer True
Using enriched air ____ narcosis when diving. - answer Has
no effect on
Advantages of using an enriched air dice computer for
enriched air diving include: - answer 1. Providing
maximum no stop time by combining EANx and multi level
diving
, 2. The ability to warn you if you exceed your maximum
depth
3. Simplifying dive planning
The primary concern regarding enriched air and scuba
equipment is: - answer That contact with high oxygen
content may cause fire, explosion or deterioration.
When using enriched air with up to 40% oxygen: - answer
1. Generally, you may use standard scuba equipment
2. Use of oxygen compatible lubricants is generally
recommended
3. Follow all manufacturer recommendations regarding
using their equipment with enriched air
Enriched air requires a dedicated cylinder because: -
answer 1. It can be hazardous to unknowingly dive with
enriched air
2. It can be hazardous to blend enriched air in a
conventional air cylinder
Based on broadly accepted international dive community
practices, enriched air cylinders should have the following
markings/colors/tags: - answer 1. Yellow cylinders should
have a 4 in green band at the shoulder with "Enriched Air,"
"Enriched Air Nitrox," "Nitrox" or a similar design
2. The cylinder should have a standard visual inspection
sticker
3. The cylinder should have a contents sticker (decal) or
tag
