Divemaster Final Exam B ACTUAL EXAM
2026/2027 | PADI Divemaster B | Verified
Q&A | Pass Guaranteed - A+ Graded
Section 1 – Advanced Diving Physics & Physiology (Questions 1–12)
Q1: A diver has a Surface Air Consumption (SAC) rate of 20 liters/min (0.7 cu ft/min). What is the RMV
(Respiratory Minute Volume) at 30 meters (99 feet, 4 ata)?
A. 20 L/min
B. 40 L/min
C. 60 L/min
D. 80 L/min [CORRECT]
Correct Answer: D
Rationale: RMV at depth equals SAC × absolute pressure. At 30 meters/4 ata, RMV = 20 L/min × 4 = 80
L/min.
Q2: A Divemaster is leading a dive at a site with a mild current. Two certified divers begin swimming
against the current and become visibly fatigued. What is the Divemaster's best action?
A. Signal the group to continue at a slower pace.
B. Have the fatigued divers ascend and wait on the surface.
C. Change the dive plan and turn the dive immediately. [CORRECT]
D. Give the fatigued divers your alternate air source and continue.
Correct Answer: C
Rationale: PADI Divemaster standards prioritize diver safety; turning the dive when divers show signs of
fatigue in current prevents overexertion, air depletion, or panic.
Q3: A diver completes a dive to 28 meters (92 feet) for 18 minutes. After a surface interval of 1 hour and
15 minutes, what is the maximum allowable bottom time for a repetitive dive to 20 meters (66 feet)
using the PADI RDP/eRDP?
A. 18 minutes
,B. 23 minutes
C. 27 minutes [CORRECT]
D. 32 minutes
Correct Answer: C
Rationale: Using Table 1, first dive pressure group is P. Table 2 for 1:15 surface interval gives pressure
group F. Table 3 for 20 meters shows 27 minutes allowable with no required stop from pressure group F.
Q4: According to Dalton's Law, what is the partial pressure of oxygen (PO2) in air at 40 meters (132
feet)?
A. 0.21 ata
B. 0.42 ata
C. 0.84 ata
D. 1.05 ata [CORRECT]
Correct Answer: D
Rationale: At 40 meters (5 ata), PO2 = 0.21 × 5 = 1.05 ata; this approaches the maximum safe PO2 limit
of 1.4 ata for working dives and requires enriched air or depth limitation consideration.
Q5: A diver experiences tremors, nausea, and tunnel vision at 35 meters (115 feet) while breathing air.
Which condition is most likely?
A. Nitrogen narcosis
B. Oxygen toxicity (CNS) [CORRECT]
C. CO2 retention
D. Decompression sickness
Correct Answer: B
Rationale: At 35 meters (4.5 ata), PO2 = 0.945 ata; prolonged exposure or exertion can produce CNS
oxygen toxicity symptoms (Visual disturbances, nausea, twitching, convulsions) even on air at depth.
Q6: What is the approximate density of air at 30 meters (99 feet) compared to surface air?
A. 2 times denser
B. 3 times denser
, C. 4 times denser [CORRECT]
D. 5 times denser
Correct Answer: C
Rationale: Air density increases proportionally with absolute pressure; at 30 meters (4 ata), air is 4 times
denser than surface air, increasing work of breathing and regulator performance demands.
Q7: A Divemaster is supervising a group of Advanced Open Water Divers. One diver reports ear pain on
descent that resolves with equalization. At 25 meters (82 feet), the pain returns severely and
equalization fails. What is the proper action?
A. Have the diver continue descent with forceful equalization
B. Ascend until pain subsides, then abort the dive if equalization fails [CORRECT]
C. Switch to a different regulator
D. Ignore the pain and complete the planned bottom time
Correct Answer: B
Rationale: Reversible ear barotrauma requires immediate depth reduction; continuing descent with
failed equalization risks tympanic membrane rupture, round window trauma, or permanent hearing
loss.
Q8: What is the primary physiological difference between Type I and Type II Decompression Sickness?
A. Type I affects joints; Type II affects the central nervous system or cardiopulmonary system [CORRECT]
B. Type I is mild; Type II is always fatal
C. Type I occurs only in warm water; Type II in cold water
D. Type I requires recompression; Type II does not
Correct Answer: A
Rationale: Type I DCS (pain-only, cutaneous, lymphatic) involves joint pain and skin symptoms; Type II
DCS involves serious neurological (spinal cord, brain) or cardiopulmonary symptoms and requires
immediate hyperbaric oxygen therapy.
Q9: A diver's BCD fails to hold air at depth. Using Archimedes' Principle, what happens to the diver's
buoyancy as they ascend from 20 meters (66 feet) to the surface?
A. The diver becomes more negatively buoyant
B. The diver becomes more positively buoyant [CORRECT]
2026/2027 | PADI Divemaster B | Verified
Q&A | Pass Guaranteed - A+ Graded
Section 1 – Advanced Diving Physics & Physiology (Questions 1–12)
Q1: A diver has a Surface Air Consumption (SAC) rate of 20 liters/min (0.7 cu ft/min). What is the RMV
(Respiratory Minute Volume) at 30 meters (99 feet, 4 ata)?
A. 20 L/min
B. 40 L/min
C. 60 L/min
D. 80 L/min [CORRECT]
Correct Answer: D
Rationale: RMV at depth equals SAC × absolute pressure. At 30 meters/4 ata, RMV = 20 L/min × 4 = 80
L/min.
Q2: A Divemaster is leading a dive at a site with a mild current. Two certified divers begin swimming
against the current and become visibly fatigued. What is the Divemaster's best action?
A. Signal the group to continue at a slower pace.
B. Have the fatigued divers ascend and wait on the surface.
C. Change the dive plan and turn the dive immediately. [CORRECT]
D. Give the fatigued divers your alternate air source and continue.
Correct Answer: C
Rationale: PADI Divemaster standards prioritize diver safety; turning the dive when divers show signs of
fatigue in current prevents overexertion, air depletion, or panic.
Q3: A diver completes a dive to 28 meters (92 feet) for 18 minutes. After a surface interval of 1 hour and
15 minutes, what is the maximum allowable bottom time for a repetitive dive to 20 meters (66 feet)
using the PADI RDP/eRDP?
A. 18 minutes
,B. 23 minutes
C. 27 minutes [CORRECT]
D. 32 minutes
Correct Answer: C
Rationale: Using Table 1, first dive pressure group is P. Table 2 for 1:15 surface interval gives pressure
group F. Table 3 for 20 meters shows 27 minutes allowable with no required stop from pressure group F.
Q4: According to Dalton's Law, what is the partial pressure of oxygen (PO2) in air at 40 meters (132
feet)?
A. 0.21 ata
B. 0.42 ata
C. 0.84 ata
D. 1.05 ata [CORRECT]
Correct Answer: D
Rationale: At 40 meters (5 ata), PO2 = 0.21 × 5 = 1.05 ata; this approaches the maximum safe PO2 limit
of 1.4 ata for working dives and requires enriched air or depth limitation consideration.
Q5: A diver experiences tremors, nausea, and tunnel vision at 35 meters (115 feet) while breathing air.
Which condition is most likely?
A. Nitrogen narcosis
B. Oxygen toxicity (CNS) [CORRECT]
C. CO2 retention
D. Decompression sickness
Correct Answer: B
Rationale: At 35 meters (4.5 ata), PO2 = 0.945 ata; prolonged exposure or exertion can produce CNS
oxygen toxicity symptoms (Visual disturbances, nausea, twitching, convulsions) even on air at depth.
Q6: What is the approximate density of air at 30 meters (99 feet) compared to surface air?
A. 2 times denser
B. 3 times denser
, C. 4 times denser [CORRECT]
D. 5 times denser
Correct Answer: C
Rationale: Air density increases proportionally with absolute pressure; at 30 meters (4 ata), air is 4 times
denser than surface air, increasing work of breathing and regulator performance demands.
Q7: A Divemaster is supervising a group of Advanced Open Water Divers. One diver reports ear pain on
descent that resolves with equalization. At 25 meters (82 feet), the pain returns severely and
equalization fails. What is the proper action?
A. Have the diver continue descent with forceful equalization
B. Ascend until pain subsides, then abort the dive if equalization fails [CORRECT]
C. Switch to a different regulator
D. Ignore the pain and complete the planned bottom time
Correct Answer: B
Rationale: Reversible ear barotrauma requires immediate depth reduction; continuing descent with
failed equalization risks tympanic membrane rupture, round window trauma, or permanent hearing
loss.
Q8: What is the primary physiological difference between Type I and Type II Decompression Sickness?
A. Type I affects joints; Type II affects the central nervous system or cardiopulmonary system [CORRECT]
B. Type I is mild; Type II is always fatal
C. Type I occurs only in warm water; Type II in cold water
D. Type I requires recompression; Type II does not
Correct Answer: A
Rationale: Type I DCS (pain-only, cutaneous, lymphatic) involves joint pain and skin symptoms; Type II
DCS involves serious neurological (spinal cord, brain) or cardiopulmonary symptoms and requires
immediate hyperbaric oxygen therapy.
Q9: A diver's BCD fails to hold air at depth. Using Archimedes' Principle, what happens to the diver's
buoyancy as they ascend from 20 meters (66 feet) to the surface?
A. The diver becomes more negatively buoyant
B. The diver becomes more positively buoyant [CORRECT]
