Question |
Options |
Answer |
| How is the Oxygen transported in our body? | A: In the white blood cells
B: In the hemoglobin
C: In solution in the blood plasma
D: B and C are correct | |
| If the percentage of CO2 in the air you exhale is 4% at the surface, then what is the percentage of CO2 in the air you exhale at a depth of 30 meters, if all other factors stay the same (this is a physiology question). | A: 4%
B: 1%
C: 16%
D: You don’t exhale CO2 underwater, but CO. | |
| Why is it important to donate pure oxygen to someone who is suffering from decompression illness? | A: Pure oxygen is making the metabolism work better
B: Decreasing of the nitrogen in the inhaled air
C: To improve the blood transportation
D: To decrease the breathing rhythm | |
| Which definition of an balanced first stage is correct? | A: When the pressure in the cylinder is decreasing the intermediate pressure is also decreasing
B: When the pressure in the cylinder is decreasing the intermediate pressure stays the same
C: When the pressure in the cylinder is decreasing the intermediate pressure increases
D: The question can’t be answered since we have to know which type the second stage is | |
| If a balloon with a volume of 4.5 liter is brought from 14 meters depth to a depth of 37 meters, what would be the new volume? | A: 2.3 liter
B: 8.8 liter
C: 4.5 liter
D: 2.1 liter | |
| What is hypocapnia? | A: Low blood sugar.
B: To little CO2 to give a breathing impulse
C: To much CO2, causing overexertion.
D: To little nitrogen | |
| Compared to a steel cylinder, an aluminum cylinder has: | A: thicker walls.
B: a smaller inner volume, compared to the outer volume.
C: less risk of corrosion.
D: All of the above. | |
| What should you do, if you have a person who have had a near drowning accident but says that he feels all right: | A: Send the person to a medical clinic for further observations
B: Give the patient something to drink
C: Bring the person with on the next dive
D: Transport the person to the nearest recompression chamber | |
| It is recommended that you do a safety stop at the end of your dive to: | A: Exhale as much CO2 as possible
B: Exhale as much CO as possible
C: Exhale as much O2 as possible
D: Exhale as much N2 as possible | |
| What is the difference between steel and aluminum cylinders? | A: The inner volume of a steel cylinder is bigger compared to the outer volume
B: The walls of a steel cylinder is thinner
C: When diving with an aluminum cylinder you need more weight
D: All of the above answers are correct | |
| If you want to navigate a triangle with a compass, you have to turn ____ degrees for every change of direction. | A: 60
B: 120
C: 90
D: 180 | |
| To have perfect buoyancy during your dives, you should perform a weight check by: | A: When holding a normal breath you should float at eye level without air in the BCD and without moving the fins
B: Float at eye level with the BCD full and holding a normal breath
C: Sinking slowly with an empty BCD while holding a normal breath and without moving the fins
D: Without any fin movement, sink until the head is completely U/W with an empty BCD and while holding a normal breath | |
| What should you do if you accidentally leave out an emergency decompression stop? | A: Immediately descent to 12 meters and follow the recommended procedures
B: Breath pure oxygen
C: Don’t dive for 24 hours
D: Answer B and C is correct | |
| Nitrogen narcoses is seen as being a concern starting at a depth of _____ meters. | A: 18
B: 40
C: 24
D: 30 | |
| Enriched air cylinders need special markings to: | A: make sure that the diver who verified the blend is the one who is going to use it.
B: avoid that other divers mistakenly take the cylinder, assuming that they dive with air.
C: avoid that the cylinder is mistakenly filled with a traditional air compressor.
D: All of the above. | |
| Until which altitude can you use the RDP without having to recalculate the depths and PG? | A: Not at all
B: 300 Meters
C: 600 Meters
D: 900 Meters | |
| When do you have to hydrostatic test your cylinder? | A: When you haven’t been using the cylinder for an period of two years
B: When it have been damage due to an fall
C: When it have been exposed to temperatures exceeding 82 °C
D: All of the above answers are correct | |
| What is hypercapnia? | A: a low body temperature.
B: to much nitrogen
C: to little CO2
D: to much CO2 | |
| When using dive computers: | A: you have a more valid decompression model than when diving with tables.
B: each diver should have a personal computer.
C: you can avoid many of the guidelines required when diving with tables.
D: All of the above. | |
| Convulsions under water indicate: | A: decompression illness
B: CNS oxygen poisoning
C: decompression sickness
D: oxygen poisoning to the lungs | |
