SSI ASSISTANT INSTRUCTOR
PRE TEST QUESTIONS AND
CORRECT VERIFIED ANSWERS
2024 GRADED A+.
2 / 32
1. Assuming a maximum partial pressure limitation of 1.4 bar, the maximum depth for a 32%
nitrox mixture is of seawater.
33.7 m
20 m
66 m
43.7 m: 33.7 m
2. Which physical law states: "If tempe...
SSI ASSISTANT INSTRUCTOR
PRE TEST QUESTIONS AND
CORRECT VERIFIED ANSWERS
2024 GRADED A+.
,1. Assuming a maximum partial pressure limitation of 1.4 bar, the maximum depth for a 32%
nitrox mixture is of seawater.
33.7 m
20 m
66 m
43.7 m: 33.7 m
2. Which physical law states: "If temperature remains constant, the pressure and volume of any
gas are inversely related"?
Dalton Henry
Archimedes
Boyle
Save: Boyle
3. For every meter of depth in freshwater, pressure changes by:
0.013 bar
0.098 bar
0.100 bar
1.03 bar: 0.098 bar
4. diver and his / her equipment weigh 87 kg when neutrally buoyant in salt- water. To be
neutrally buoyant for freshwater diving with the same equipment, he /she has to:
Add weight
All answers are correct Use
the same weight
Remove weight: Remove weight
5. If 2 liters of air are needed in your buoyancy compensator to maintain neutral buoyancy at
10m in the ocean, what will happen to your buoyancy if you ascend 3 m without deflating:
Your positive buoyancy will increase There
will be no change in buoyancy Your negative
buoyancy will increase
You will stay neutral no matter if you ascend or descend: Your positive buoyancy will increase
,6. Breathing gas consumption:
Varies inversely with depth Increases
as depth increases Decreases as depth
increases
Remains the same as depth increases: Increases as depth increases
, 7. The ocean depth at which the partial pressure of oxygen in air equals 1.6 bar is meters
assuming O2 = 21%.
70
85
66
55: 66
8. Assuming a maximum partial pressure limitation of 1.4 bar, the maximum MOD for a 40%
nitrox mixture in the ocean is:
35 meters
25 meters
40 meters
20 meters: 25 meters
9. The absolute pressure at a depth of 50 meters in salt water is:
5.012 bar
6.000 bar
5.000 bar
5.901 bar: 6.000 bar
10. What would be the surface air consumption rate (SAC) of a diver with a 200bar, 10 liter
cylinder who uses 50bar in 10 minutes at a depth of 10 meters in the ocean?
25 liters / minute 50
liters / minute 35
liters / minute
10 liters / minute: 25 liters / minute
11. If you have difficulty equalizing pressure in your ears/sinuses while de- scending, you
should:
Ascend 2 meters and force equalization Stop and wait
until the discomfort subsides
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