BLS (Basic Life Support) practice Exam
With Actual Questions & Verified
Answers,Plus Rationales/Expert
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2025/2026 /Latest Update/Instant
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1. What is the recommended rate of chest compressions for adult CPR?
A) 80–100 per minute
B) 100–120 per minute
C) 120–140 per minute
D) 140–160 per minute
B) 100–120 per minute
Rationale: The AHA recommends performing chest compressions at a rate of 100–120 per
minute to maximize perfusion and increase the likelihood of survival.
2. During CPR, what is the recommended depth of chest compressions for an adult?
A) 1–1.5 inches
B) 2–2.4 inches
C) 2.5–3 inches
D) 3–3.5 inches
B) 2–2.4 inches
Rationale: Effective adult chest compressions should be at least 2 inches (5 cm) deep but
not more than 2.4 inches to ensure adequate blood flow without causing unnecessary
injury.
3. What is the recommended compression-to-ventilation ratio for a single rescuer
performing CPR on an adult?
A) 15:2
B) 30:2
C) 5:1
D) 10:1
,B) 30:2
Rationale: For a single rescuer, the AHA recommends 30 compressions followed by 2
ventilations to optimize oxygen delivery and circulation.
4. For a child victim, what is the recommended compression depth during CPR?
A) About 1 inch
B) About 1.5 inches
C) About 2 inches
D) About 2.5 inches
C) About 2 inches
Rationale: For children (1 year to puberty), compressions should be approximately 2 inches
(5 cm) deep to ensure effective circulation while avoiding injury.
5. When performing CPR on an infant, what is the recommended compression-to-
ventilation ratio for a single rescuer?
A) 15:2
B) 30:2
C) 3:1
D) 5:1
B) 30:2
Rationale: Single rescuers should use 30 compressions followed by 2 breaths for infants to
maintain circulation and oxygenation.
6. What is the recommended hand placement for adult chest compressions?
A) Lower half of the sternum
B) Upper half of the sternum
C) Center of the chest
D) Left side of the chest
A) Lower half of the sternum
Rationale: Placing hands on the lower half of the sternum minimizes the risk of rib
fractures while maximizing cardiac output.
7. If an adult suddenly collapses and is unresponsive, what is the first action you should
take?
A) Start chest compressions immediately
B) Check for pulse for 10 seconds
C) Call emergency services and get an AED
D) Give 2 rescue breaths
C) Call emergency services and get an AED
Rationale: Early activation of emergency services and retrieval of an AED is critical in adult
cardiac arrest to improve survival chances.
, 8. When should you use an automated external defibrillator (AED) on a victim?
A) Only if they are breathing
B) Only if they have a pulse
C) As soon as it is available in a cardiac arrest situation
D) Only if CPR fails
C) As soon as it is available in a cardiac arrest situation
Rationale: Early defibrillation is key in sudden cardiac arrest, and AEDs should be used
immediately when available.
9. What is the correct sequence of steps in the BLS adult chain of survival?
A) Early CPR, early defibrillation, activation of EMS, advanced care
B) Activation of EMS, early CPR, early defibrillation, advanced care
C) Early defibrillation, early CPR, activation of EMS, advanced care
D) Activation of EMS, advanced care, early CPR, early defibrillation
B) Activation of EMS, early CPR, early defibrillation, advanced care
Rationale: The chain of survival emphasizes early EMS activation, immediate CPR, rapid
defibrillation, and advanced care for optimal outcomes.
10. What is the correct technique for giving rescue breaths to an adult during CPR?
A) Cover the nose and mouth, give 2 breaths over 1 second each
B) Pinch the nose, seal mouth, give 1 breath over 2 seconds
C) Give 5 quick breaths without pausing
D) Give 2 breaths over 5 seconds each
A) Cover the nose and mouth, give 2 breaths over 1 second each
Rationale: Each rescue breath should last about 1 second and make the chest rise visibly to
ensure effective ventilation.
11. How long should you check for breathing and a pulse before starting CPR?
A) Up to 5 seconds
B) Up to 10 seconds
C) Up to 15 seconds
D) Up to 20 seconds
B) Up to 10 seconds
Rationale: The AHA recommends checking responsiveness and breathing/pulse for no
more than 10 seconds to avoid delays in starting CPR.
12. When performing two-rescuer CPR on an adult, how often should rescuers switch
roles?
A) Every 30 compressions
B) Every 1 minute
With Actual Questions & Verified
Answers,Plus Rationales/Expert
Verified For Guaranteed Pass
2025/2026 /Latest Update/Instant
Download Pdf
1. What is the recommended rate of chest compressions for adult CPR?
A) 80–100 per minute
B) 100–120 per minute
C) 120–140 per minute
D) 140–160 per minute
B) 100–120 per minute
Rationale: The AHA recommends performing chest compressions at a rate of 100–120 per
minute to maximize perfusion and increase the likelihood of survival.
2. During CPR, what is the recommended depth of chest compressions for an adult?
A) 1–1.5 inches
B) 2–2.4 inches
C) 2.5–3 inches
D) 3–3.5 inches
B) 2–2.4 inches
Rationale: Effective adult chest compressions should be at least 2 inches (5 cm) deep but
not more than 2.4 inches to ensure adequate blood flow without causing unnecessary
injury.
3. What is the recommended compression-to-ventilation ratio for a single rescuer
performing CPR on an adult?
A) 15:2
B) 30:2
C) 5:1
D) 10:1
,B) 30:2
Rationale: For a single rescuer, the AHA recommends 30 compressions followed by 2
ventilations to optimize oxygen delivery and circulation.
4. For a child victim, what is the recommended compression depth during CPR?
A) About 1 inch
B) About 1.5 inches
C) About 2 inches
D) About 2.5 inches
C) About 2 inches
Rationale: For children (1 year to puberty), compressions should be approximately 2 inches
(5 cm) deep to ensure effective circulation while avoiding injury.
5. When performing CPR on an infant, what is the recommended compression-to-
ventilation ratio for a single rescuer?
A) 15:2
B) 30:2
C) 3:1
D) 5:1
B) 30:2
Rationale: Single rescuers should use 30 compressions followed by 2 breaths for infants to
maintain circulation and oxygenation.
6. What is the recommended hand placement for adult chest compressions?
A) Lower half of the sternum
B) Upper half of the sternum
C) Center of the chest
D) Left side of the chest
A) Lower half of the sternum
Rationale: Placing hands on the lower half of the sternum minimizes the risk of rib
fractures while maximizing cardiac output.
7. If an adult suddenly collapses and is unresponsive, what is the first action you should
take?
A) Start chest compressions immediately
B) Check for pulse for 10 seconds
C) Call emergency services and get an AED
D) Give 2 rescue breaths
C) Call emergency services and get an AED
Rationale: Early activation of emergency services and retrieval of an AED is critical in adult
cardiac arrest to improve survival chances.
, 8. When should you use an automated external defibrillator (AED) on a victim?
A) Only if they are breathing
B) Only if they have a pulse
C) As soon as it is available in a cardiac arrest situation
D) Only if CPR fails
C) As soon as it is available in a cardiac arrest situation
Rationale: Early defibrillation is key in sudden cardiac arrest, and AEDs should be used
immediately when available.
9. What is the correct sequence of steps in the BLS adult chain of survival?
A) Early CPR, early defibrillation, activation of EMS, advanced care
B) Activation of EMS, early CPR, early defibrillation, advanced care
C) Early defibrillation, early CPR, activation of EMS, advanced care
D) Activation of EMS, advanced care, early CPR, early defibrillation
B) Activation of EMS, early CPR, early defibrillation, advanced care
Rationale: The chain of survival emphasizes early EMS activation, immediate CPR, rapid
defibrillation, and advanced care for optimal outcomes.
10. What is the correct technique for giving rescue breaths to an adult during CPR?
A) Cover the nose and mouth, give 2 breaths over 1 second each
B) Pinch the nose, seal mouth, give 1 breath over 2 seconds
C) Give 5 quick breaths without pausing
D) Give 2 breaths over 5 seconds each
A) Cover the nose and mouth, give 2 breaths over 1 second each
Rationale: Each rescue breath should last about 1 second and make the chest rise visibly to
ensure effective ventilation.
11. How long should you check for breathing and a pulse before starting CPR?
A) Up to 5 seconds
B) Up to 10 seconds
C) Up to 15 seconds
D) Up to 20 seconds
B) Up to 10 seconds
Rationale: The AHA recommends checking responsiveness and breathing/pulse for no
more than 10 seconds to avoid delays in starting CPR.
12. When performing two-rescuer CPR on an adult, how often should rescuers switch
roles?
A) Every 30 compressions
B) Every 1 minute
