PADI DIVEMASTER SCUBADIVING STUDY REVIEW
WITH QUESTIONS AND ANSWERS 2026
1. A diver descends rapidly to 30 meters/100 feet and begins to experience nitrogen
narcosis. Which symptom is MOST commonly associated with this condition?
A. Sharp chest pain
B. Loss of hearing
C. Impaired judgment and slowed reasoning
D. Severe muscle paralysis
Correct Answer: C
Explanation: Nitrogen narcosis commonly affects mental performance, causing
impaired judgment, slowed reasoning, and euphoria. Chest pain and paralysis are
unrelated, while hearing loss is not a primary symptom.
2. During a Divemaster-led dive, a diver consumes air unusually fast. What is the MOST
appropriate first action?
A. Force the diver to surface immediately
B. Check for stress, exertion, or equipment problems
C. Ignore the issue if the diver appears calm
D. Switch the diver to a different buddy
Correct Answer: B
Explanation: Rapid air consumption is often caused by stress, overexertion, or
equipment issues. The Divemaster should assess the cause first before taking further
action.
3. What is the primary purpose of a surface marker buoy (SMB)?
A. To improve underwater navigation
B. To provide emergency flotation underwater
C. To mark a diver’s position at the surface
D. To increase buoyancy during descent
Correct Answer: C
Explanation: An SMB helps boats and surface support identify diver locations,
improving safety. It does not assist underwater navigation or descent buoyancy.
4. A diver who ascends too quickly is at greatest risk for which condition?
A. Nitrogen narcosis
B. Carbon monoxide poisoning
C. Decompression sickness
D. Hypothermia
Correct Answer: C
Explanation: Rapid ascents can cause dissolved nitrogen to form bubbles in body
tissues, leading to decompression sickness (DCS).
,5. Which gas law BEST explains why air spaces compress during descent?
A. Dalton’s Law
B. Henry’s Law
C. Boyle’s Law
D. Charles’s Law
Correct Answer: C
Explanation: Boyle’s Law states that pressure and volume are inversely related. As
pressure increases during descent, air volume decreases.
6. A diver complains of dizziness and ringing in the ears after forcefully equalizing
during descent. What is the MOST likely problem?
A. Reverse block
B. Inner ear barotrauma
C. Decompression sickness
D. Oxygen toxicity
Correct Answer: B
Explanation: Forceful equalization can damage delicate inner ear structures, causing
dizziness and ringing in the ears.
7. Which piece of equipment is MOST important for monitoring no-decompression
limits?
A. Compass
B. Dive knife
C. Dive computer
D. Surface float
Correct Answer: C
Explanation: A dive computer continuously tracks depth and time to monitor no-
decompression limits accurately.
8. What is the recommended action if a diver becomes separated from the group
underwater?
A. Continue the dive alone
B. Search indefinitely underwater
C. Search briefly for one minute, then surface safely
D. Descend deeper to improve visibility
Correct Answer: C
Explanation: Standard diving procedure is to search for about one minute and then
surface safely to reunite.
, 9. What is the MAIN role of a PADI Divemaster during certified diver supervision?
A. Conduct solo rescue operations only
B. Supervise and assist certified divers safely
C. Teach all PADI specialty courses independently
D. Repair all diving equipment underwater
Correct Answer: B
Explanation: Divemasters supervise diving activities and assist certified divers while
maintaining safety standards.
10. Which condition increases the risk of decompression sickness?
A. Proper hydration
B. Slow controlled ascents
C. Flying immediately after diving
D. Safety stops
Correct Answer: C
Explanation: Flying after diving reduces ambient pressure further, increasing the risk
of nitrogen bubbles forming in tissues.
11. What is the standard recommended ascent rate for recreational diving?
A. 30 meters/100 feet per minute
B. 18 meters/60 feet per minute
C. 9 meters/30 feet per minute or slower
D. 3 meters/10 feet per minute only
Correct Answer: C
Explanation: Recreational divers should ascend no faster than 9 meters/30 feet per
minute to reduce DCS risk.
12. Which of the following BEST describes positive buoyancy?
A. Remaining motionless underwater
B. Sinking uncontrollably
C. Floating toward the surface
D. Hovering at mid-depth
Correct Answer: C
Explanation: Positive buoyancy means the diver is lighter than the surrounding water
and floats upward.
13. A diver experiences severe shivering and confusion during a cold-water dive. What is
the MOST likely issue?
A. Heat exhaustion
B. Nitrogen narcosis
C. Hypothermia
D. Oxygen toxicity
WITH QUESTIONS AND ANSWERS 2026
1. A diver descends rapidly to 30 meters/100 feet and begins to experience nitrogen
narcosis. Which symptom is MOST commonly associated with this condition?
A. Sharp chest pain
B. Loss of hearing
C. Impaired judgment and slowed reasoning
D. Severe muscle paralysis
Correct Answer: C
Explanation: Nitrogen narcosis commonly affects mental performance, causing
impaired judgment, slowed reasoning, and euphoria. Chest pain and paralysis are
unrelated, while hearing loss is not a primary symptom.
2. During a Divemaster-led dive, a diver consumes air unusually fast. What is the MOST
appropriate first action?
A. Force the diver to surface immediately
B. Check for stress, exertion, or equipment problems
C. Ignore the issue if the diver appears calm
D. Switch the diver to a different buddy
Correct Answer: B
Explanation: Rapid air consumption is often caused by stress, overexertion, or
equipment issues. The Divemaster should assess the cause first before taking further
action.
3. What is the primary purpose of a surface marker buoy (SMB)?
A. To improve underwater navigation
B. To provide emergency flotation underwater
C. To mark a diver’s position at the surface
D. To increase buoyancy during descent
Correct Answer: C
Explanation: An SMB helps boats and surface support identify diver locations,
improving safety. It does not assist underwater navigation or descent buoyancy.
4. A diver who ascends too quickly is at greatest risk for which condition?
A. Nitrogen narcosis
B. Carbon monoxide poisoning
C. Decompression sickness
D. Hypothermia
Correct Answer: C
Explanation: Rapid ascents can cause dissolved nitrogen to form bubbles in body
tissues, leading to decompression sickness (DCS).
,5. Which gas law BEST explains why air spaces compress during descent?
A. Dalton’s Law
B. Henry’s Law
C. Boyle’s Law
D. Charles’s Law
Correct Answer: C
Explanation: Boyle’s Law states that pressure and volume are inversely related. As
pressure increases during descent, air volume decreases.
6. A diver complains of dizziness and ringing in the ears after forcefully equalizing
during descent. What is the MOST likely problem?
A. Reverse block
B. Inner ear barotrauma
C. Decompression sickness
D. Oxygen toxicity
Correct Answer: B
Explanation: Forceful equalization can damage delicate inner ear structures, causing
dizziness and ringing in the ears.
7. Which piece of equipment is MOST important for monitoring no-decompression
limits?
A. Compass
B. Dive knife
C. Dive computer
D. Surface float
Correct Answer: C
Explanation: A dive computer continuously tracks depth and time to monitor no-
decompression limits accurately.
8. What is the recommended action if a diver becomes separated from the group
underwater?
A. Continue the dive alone
B. Search indefinitely underwater
C. Search briefly for one minute, then surface safely
D. Descend deeper to improve visibility
Correct Answer: C
Explanation: Standard diving procedure is to search for about one minute and then
surface safely to reunite.
, 9. What is the MAIN role of a PADI Divemaster during certified diver supervision?
A. Conduct solo rescue operations only
B. Supervise and assist certified divers safely
C. Teach all PADI specialty courses independently
D. Repair all diving equipment underwater
Correct Answer: B
Explanation: Divemasters supervise diving activities and assist certified divers while
maintaining safety standards.
10. Which condition increases the risk of decompression sickness?
A. Proper hydration
B. Slow controlled ascents
C. Flying immediately after diving
D. Safety stops
Correct Answer: C
Explanation: Flying after diving reduces ambient pressure further, increasing the risk
of nitrogen bubbles forming in tissues.
11. What is the standard recommended ascent rate for recreational diving?
A. 30 meters/100 feet per minute
B. 18 meters/60 feet per minute
C. 9 meters/30 feet per minute or slower
D. 3 meters/10 feet per minute only
Correct Answer: C
Explanation: Recreational divers should ascend no faster than 9 meters/30 feet per
minute to reduce DCS risk.
12. Which of the following BEST describes positive buoyancy?
A. Remaining motionless underwater
B. Sinking uncontrollably
C. Floating toward the surface
D. Hovering at mid-depth
Correct Answer: C
Explanation: Positive buoyancy means the diver is lighter than the surrounding water
and floats upward.
13. A diver experiences severe shivering and confusion during a cold-water dive. What is
the MOST likely issue?
A. Heat exhaustion
B. Nitrogen narcosis
C. Hypothermia
D. Oxygen toxicity
