SDI Computer Nitrox Test. Questions
with Correct Verified Answers. Latest
2026-2027. Graded A
1.6 - ANSThe maximum partial pressure of oxygen (PO2) we use in Nitrox
diving is:
120 minutes - ANSWhat is the recommended surface interval after
extended dives with Nitrox?
150 Minutes or 2.5 hours - ANSDuring any 24-hour period, you can be
exposed to a Nitrox mixture at its Maximum Operating Depth (MOD) for up
to:
16 percent - ANSWhat is the minimum concentration of oxygen required to
maintain consciousness at sea level?
40 m/132 ft - ANSThe MOD for EAN32 is:
40 percent - ANSThe maximum percentage of oxygen that sport divers use
in a Nitrox mixture is:
6 m/20 ft - ANSWhat is the maximum recommended depth for using 100
percent oxygen?
1
, Administration of pure oxygen - ANSThe most important first-aid procedure
for a diver suspected of suffering from decompression sickness is:
An electronic device used to measure the percentage of oxygen in a gas
mixture. - ANSWhat is an oxygen analyzer?
Blender - ANSThe person who creates the Nitrox used to fill scuba
cylinders is referred to as a:
Consult the Old Diver's Almanac. - ANSAll of the following are ways to
check for the availability of Nitrox at travel destinations, except:
EAN21 - ANSWhich of the following is not a Nitrox mixture? EAN24,
EAN21, EAN40
Enriched Air, Enriched Air Nitrox, Nitrox, Etc. - ANSA mixture of nitrogen
and oxygen in which the percentage of oxygen is greater than that found in
air is generally called:
False - ANSTrue or False. Dive computers work by monitoring the
presences of so-called 'silent bubbles using ultrasound.
False - ANSTrue or False. Divers can limit the adverse effects of long-term
exposure to nitrogen by diving Nitrox less than 20 times a year.
False - ANSTrue or False. The most important step divers can take to help
avoid oxygen toxicity is to never exceed a PO2 of 2.0.
2
with Correct Verified Answers. Latest
2026-2027. Graded A
1.6 - ANSThe maximum partial pressure of oxygen (PO2) we use in Nitrox
diving is:
120 minutes - ANSWhat is the recommended surface interval after
extended dives with Nitrox?
150 Minutes or 2.5 hours - ANSDuring any 24-hour period, you can be
exposed to a Nitrox mixture at its Maximum Operating Depth (MOD) for up
to:
16 percent - ANSWhat is the minimum concentration of oxygen required to
maintain consciousness at sea level?
40 m/132 ft - ANSThe MOD for EAN32 is:
40 percent - ANSThe maximum percentage of oxygen that sport divers use
in a Nitrox mixture is:
6 m/20 ft - ANSWhat is the maximum recommended depth for using 100
percent oxygen?
1
, Administration of pure oxygen - ANSThe most important first-aid procedure
for a diver suspected of suffering from decompression sickness is:
An electronic device used to measure the percentage of oxygen in a gas
mixture. - ANSWhat is an oxygen analyzer?
Blender - ANSThe person who creates the Nitrox used to fill scuba
cylinders is referred to as a:
Consult the Old Diver's Almanac. - ANSAll of the following are ways to
check for the availability of Nitrox at travel destinations, except:
EAN21 - ANSWhich of the following is not a Nitrox mixture? EAN24,
EAN21, EAN40
Enriched Air, Enriched Air Nitrox, Nitrox, Etc. - ANSA mixture of nitrogen
and oxygen in which the percentage of oxygen is greater than that found in
air is generally called:
False - ANSTrue or False. Dive computers work by monitoring the
presences of so-called 'silent bubbles using ultrasound.
False - ANSTrue or False. Divers can limit the adverse effects of long-term
exposure to nitrogen by diving Nitrox less than 20 times a year.
False - ANSTrue or False. The most important step divers can take to help
avoid oxygen toxicity is to never exceed a PO2 of 2.0.
2
