Scuba certification Exam Questions With Complete
Solutions
A 3AA tank rated at 2250 PSI is filled to what pressure when it
is hydrostatically tested:
A) 2250 PSI
B) 3750 PSI
C) 2475 PSI
D) none of the above Correct Answers B) 3750 PSI
A current that runs from the shore through the surf is:
A) an ebb current
B) offshore current
C) longshore current
D) rip current Correct Answers D) rip current
A difference between an air embolism and the bends is that:
A) in an air embolism nitrogen is dissolved in the bloodstream
and in the bends whole air bubbles into the bloodstream
B) the bends is caused by having too much nitrogen in the blood
and air embolism is caused by not having enough air
C) in an air embolism air bubbles enter the bloodstream in the
bends nitrogen, comes out of solution, forming bubbles in the
blood and tissues Correct Answers C) In an air embolism air
bubbles into the bloodstream. In the bends nitrogen comes out of
solution, forming bubbles in the blood and tissues.
A disadvantage of the standard nylon weight belt is that
A) it deteriorates in chlorinated water
B) it has a tendency to contract on descent
,C) it adheres to the wet suit and is difficult to ditch in an
emergency
D) as the wet suit compresses on descent, the fit of the belt
becomes looser Correct Answers D) as the wet suit
compresses on descent, the fit of the belt becomes looser
A diver at 110 feet notices. He is experiencing symptoms of
possible inert gas narcosis. What should he do?:
A) stop all activity and rest
B) ascend in order to lower the amount of oxygen in his body
C) continue activity at a slower pace
D) ascend a bit to reduce the amount of nitrogen in his body
Correct Answers D) ascend a bit to reduce the amount of
nitrogen in his body
A diving mask should have a face plate which is:
A) tinted for optimal visibility
B) made of high impact plastic
C) resistant to scratches
D) made of tempered glass Correct Answers D) made of
tempered glass
A diving tank should be stored:
A) on its side to minimize the danger of its falling over
B) standing up
C) in any secure, convenient position as long as the cylinder is
emptied completely
D) in a cool place with the valve removed Correct Answers A)
on its side to minimize the danger of its falling over
A green or brown regulator filter, most likely suggests that:
,A) the regulator hasn't been cleaned properly
B) storing the regulator in a warm humid place has caused
bacterial growth
C) rust and perhaps moisture in the tank
D) the regulator has been properly broken in by an experienced
diver Correct Answers A) the regulator hasn't been cleaned
properly
A kelp or feet first dive is good to use in murky water
A) true
B) false Correct Answers A) true
A pain near the eyes is most likely an indication of:
A) mask squeeze
B) lower ear canal squeeze
C) sinus squeeze
D) none of the above Correct Answers C) sinus squeeze
A person floats if he displaces a weight of water _____ his own
weight:
A) greater than
B) equal to
C) less than
D) none of the above Correct Answers A) greater than
A purge valve is located on
A) the tank valve
B) the diaphragm
C) the regulator's first stage
D) the regulator's second stage Correct Answers D) the
regulator's second stage
, A reverse block refers to pain in the:
A) sinus during descent
B) ear during ascent
C) joints during ascent
D) teeth under pressure Correct Answers B) ear during ascent
A SCUBA tank should always be filled:
A) at ambient temperature
B) in a water cooling bath
C) before it is to be stored for a long time
D) before it is transported in a commercial vehicle Correct
Answers B) in a water cooling bath
A SCUBA tank should be hydrostatically tested:
A) once every 6 months
B) once every 12 months
C) once every 5 years
D) only if the tank has been subjected to extremely stressful
conditions Correct Answers C) once every 5 years
A snorkel should have a:
A) one way check valve to keep water from spilling in
B) comfortable mouthpiece and be easy to clear and breathe
through
C) quick release in case it becomes entangled
D) purge valve Correct Answers B) comfortable mouthpiece
and be easy to clear and breathe through
A sudden unreasoned response to a situation believed to be
dangerous is called:
Solutions
A 3AA tank rated at 2250 PSI is filled to what pressure when it
is hydrostatically tested:
A) 2250 PSI
B) 3750 PSI
C) 2475 PSI
D) none of the above Correct Answers B) 3750 PSI
A current that runs from the shore through the surf is:
A) an ebb current
B) offshore current
C) longshore current
D) rip current Correct Answers D) rip current
A difference between an air embolism and the bends is that:
A) in an air embolism nitrogen is dissolved in the bloodstream
and in the bends whole air bubbles into the bloodstream
B) the bends is caused by having too much nitrogen in the blood
and air embolism is caused by not having enough air
C) in an air embolism air bubbles enter the bloodstream in the
bends nitrogen, comes out of solution, forming bubbles in the
blood and tissues Correct Answers C) In an air embolism air
bubbles into the bloodstream. In the bends nitrogen comes out of
solution, forming bubbles in the blood and tissues.
A disadvantage of the standard nylon weight belt is that
A) it deteriorates in chlorinated water
B) it has a tendency to contract on descent
,C) it adheres to the wet suit and is difficult to ditch in an
emergency
D) as the wet suit compresses on descent, the fit of the belt
becomes looser Correct Answers D) as the wet suit
compresses on descent, the fit of the belt becomes looser
A diver at 110 feet notices. He is experiencing symptoms of
possible inert gas narcosis. What should he do?:
A) stop all activity and rest
B) ascend in order to lower the amount of oxygen in his body
C) continue activity at a slower pace
D) ascend a bit to reduce the amount of nitrogen in his body
Correct Answers D) ascend a bit to reduce the amount of
nitrogen in his body
A diving mask should have a face plate which is:
A) tinted for optimal visibility
B) made of high impact plastic
C) resistant to scratches
D) made of tempered glass Correct Answers D) made of
tempered glass
A diving tank should be stored:
A) on its side to minimize the danger of its falling over
B) standing up
C) in any secure, convenient position as long as the cylinder is
emptied completely
D) in a cool place with the valve removed Correct Answers A)
on its side to minimize the danger of its falling over
A green or brown regulator filter, most likely suggests that:
,A) the regulator hasn't been cleaned properly
B) storing the regulator in a warm humid place has caused
bacterial growth
C) rust and perhaps moisture in the tank
D) the regulator has been properly broken in by an experienced
diver Correct Answers A) the regulator hasn't been cleaned
properly
A kelp or feet first dive is good to use in murky water
A) true
B) false Correct Answers A) true
A pain near the eyes is most likely an indication of:
A) mask squeeze
B) lower ear canal squeeze
C) sinus squeeze
D) none of the above Correct Answers C) sinus squeeze
A person floats if he displaces a weight of water _____ his own
weight:
A) greater than
B) equal to
C) less than
D) none of the above Correct Answers A) greater than
A purge valve is located on
A) the tank valve
B) the diaphragm
C) the regulator's first stage
D) the regulator's second stage Correct Answers D) the
regulator's second stage
, A reverse block refers to pain in the:
A) sinus during descent
B) ear during ascent
C) joints during ascent
D) teeth under pressure Correct Answers B) ear during ascent
A SCUBA tank should always be filled:
A) at ambient temperature
B) in a water cooling bath
C) before it is to be stored for a long time
D) before it is transported in a commercial vehicle Correct
Answers B) in a water cooling bath
A SCUBA tank should be hydrostatically tested:
A) once every 6 months
B) once every 12 months
C) once every 5 years
D) only if the tank has been subjected to extremely stressful
conditions Correct Answers C) once every 5 years
A snorkel should have a:
A) one way check valve to keep water from spilling in
B) comfortable mouthpiece and be easy to clear and breathe
through
C) quick release in case it becomes entangled
D) purge valve Correct Answers B) comfortable mouthpiece
and be easy to clear and breathe through
A sudden unreasoned response to a situation believed to be
dangerous is called:
