Deutsch
Nederlands
Francais
     
     
Below you will find 20 questions, selected randomly from our database. Choose the best answer to each of the questions. Once you answered all questions, enter your first name and your email address. You receive the score for all questions, and – if you should have mistakes – the correct answers by email.
Question
Options
Answer
Which factors can contribute to decompression illness?A: Altered circulation
B: Increased metabolism
C: A and B are correct
D: High water temperature
When an object is ___ kg negatively buoyant you should use an lifting device to recover the object:A: 10 - 15 kg
B: 4 - 5 kg
C: 15 - 20 kg
D: This depends on the physical force of the diver
Decompression illness type I :A: does involve neurological symptoms
B: does normally not involve neurological symptoms
C: is not serious as it only involves silent bubbles
D: does not require oxygen as a first-aid procedure.
Sound travels ____ times faster under water, than in air.A: 2
B: 3
C: 4
D: 5
Why should you have your cylinder visually inspected? To look for:A: Corrosion on the inner side of the cylinder
B: Corrosion on the bottom of the cylinder
C: Corrosion between the cylinder and valve
D: All of the above answers are correct
At which depth is the partial pressure of oxygen in air 1.6 bar and consequently starts the risk of convulsions without warning?A: 100 meters
B: 40 meters
C: 70 meters
D: 66 meters
What are the consequences of smoking?A: More carbon monoxide in the blood
B: A weakening of the lung tissues and therefore a bigger risk of lung over expansion injury
C: Is in generally bad for your health
D: All answer above are correct
During a night dive each diver should at least have:A: One primary light
B: One primary light and one backup light
C: One primary light and two backup lights
D: One primary light, one backup light and one chemical light-stick
What is the pressure at 26 meters in fresh water.A: 2.6 bar
B: 3.6 bar
C: 2.5 bar
D: 3.5 bar
A cylinder is filled to a pressure of 205 bar and reaches a temperature of 71 °C. This cylinder is then taken to an environment with a temperature of 4 °C. What will be the new pressure?A: 245 bar
B: 175 bar
C: 255 bar
D: 165 bar
According to which law should a depth gauge work upon if it should give the theoretical depth when diving at altitudes above 300 meters?A: Henry
B: Boyle
C: Dalton
D: Charles
If a balloon with a volume of 8 liter is brought from 10 meters depth to a depth of 30 meters, what would be the new volume?A: 2 liter
B: 4 liter
C: 12 liter
D: 18 liter
Because of _________________ you see less contrast under water than you do in air.A: refraction
B: reflection
C: absorption
D: diffusion
A 12 liter scuba cylinder is filled at 200 bar at a temperature of 61 °C. Over night, the temperature drops to 11 °C. What is the pressure of the cylinder now?A: 150 bar
B: 170 bar
C: 230 bar
D: 235 bar
What is anoxia?A: To little oxygen.
B: To much oxygen.
C: No Nitrogen.
D: No oxygen.
After a lung overpressure injury, air is accumulated in the center of the chest, between the tissues and around the hart. This indicates a condition called:A: Pneumathorax
B: Mediastinal emphysema
C: Air embolism
D: Subcutaneous emphysema
What does the + stamp, on the neck of the cylinder, mean?A: You can fill the cylinder to 10 % above the working pressure
B: The cylinder have to be controlled more often
C: The cylinder can be used twice as long without testing it
D: It is an aluminum cylinder
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 have the biggest influence on tides?A: The gravity from the sun
B: The gravity from the sun and the moon
C: Storms and hurricanes around the world
D: Currents and topography of the oceans
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

First name:
Email:

ATTENTION: we are sending the corrections to this email address.
We are eager to know your score!

I my opinion, the following divers should also take this test:

First name Email address Language
SCUBA Publications - Daniela Goldstein, 95 Av. Du Dr. Picaud, 06150 Cannes la Bocca, France, +33 493471047
info@scuba-publications.com