BASIC LIFE SUPPORT (BLS) EXAM 2025
1. What is the first step when you encounter a collapsed
person?
A. Begin chest compressions
B. Check for responsiveness
C. Call emergency services
D. Provide rescue breaths
Answer: B
Rationale: Checking responsiveness ensures the victim truly
needs assistance before activating further emergency
actions. It helps determine the next steps in care.
2. What is the correct compression rate for adult CPR?
A. 60–80 per minute
B. 80–100 per minute
C. 100–120 per minute
D. 120–140 per minute
Answer: C
Rationale: High-quality CPR requires compressions at a
rate of 100–120 per minute to maintain adequate blood
circulation.
3. What is the recommended compression depth for adults?
A. At least 1 inch
B. At least 2 inches
C. At least 3 inches
, D. At least 4 inches
Answer: B
Rationale: Compressing at least 2 inches ensures sufficient
pressure to circulate blood without causing excessive
injury.
4. When should you activate emergency response services?
A. After 5 minutes of CPR
B. Immediately after checking responsiveness
C. After giving breaths
D. Only if no pulse is detected
Answer: B
Rationale: Early activation ensures professional help is on
the way as soon as possible, improving survival chances.
5. What is the compression-to-ventilation ratio for a single
rescuer adult CPR?
A. 15:2
B. 30:2
C. 20:2
D. 10:2
Answer: B
Rationale: The 30:2 ratio balances circulation and
oxygenation for optimal resuscitation.
6. Where should hands be placed for chest compressions?
A. Upper chest
, B. Lower left chest
C. Center of the chest
D. Over the ribs
Answer: C
Rationale: Placing hands on the center of the chest
(sternum) ensures effective compression of the heart.
7. What should you do if the chest does not rise during
ventilation?
A. Increase breath force
B. Reposition the airway
C. Continue compressions only
D. Stop CPR
Answer: B
Rationale: Airway repositioning often resolves blockage
and allows proper ventilation.
8. What is the purpose of an AED?
A. Provide oxygen
B. Restart breathing
C. Deliver a shock to restore heart rhythm
D. Monitor pulse
Answer: C
Rationale: AEDs analyze heart rhythm and deliver shocks to
correct life-threatening arrhythmias.
, 9. When should an AED be used?
A. Only after CPR fails
B. As soon as it becomes available
C. After 10 minutes
D. Only by doctors
Answer: B
Rationale: Early defibrillation significantly increases
survival chances.
10. What is the first step in using an AED?
A. Deliver shock
B. Turn it on
C. Attach pads
D. Check pulse
Answer: B
Rationale: Turning on the AED activates voice prompts
guiding the rescuer.
11. What should you ensure before delivering a shock?
A. The patient is breathing
B. No one is touching the patient
C. Pads are removed
D. CPR is stopped permanently
Answer: B
Rationale: Ensuring no contact prevents accidental shock to
rescuers.
1. What is the first step when you encounter a collapsed
person?
A. Begin chest compressions
B. Check for responsiveness
C. Call emergency services
D. Provide rescue breaths
Answer: B
Rationale: Checking responsiveness ensures the victim truly
needs assistance before activating further emergency
actions. It helps determine the next steps in care.
2. What is the correct compression rate for adult CPR?
A. 60–80 per minute
B. 80–100 per minute
C. 100–120 per minute
D. 120–140 per minute
Answer: C
Rationale: High-quality CPR requires compressions at a
rate of 100–120 per minute to maintain adequate blood
circulation.
3. What is the recommended compression depth for adults?
A. At least 1 inch
B. At least 2 inches
C. At least 3 inches
, D. At least 4 inches
Answer: B
Rationale: Compressing at least 2 inches ensures sufficient
pressure to circulate blood without causing excessive
injury.
4. When should you activate emergency response services?
A. After 5 minutes of CPR
B. Immediately after checking responsiveness
C. After giving breaths
D. Only if no pulse is detected
Answer: B
Rationale: Early activation ensures professional help is on
the way as soon as possible, improving survival chances.
5. What is the compression-to-ventilation ratio for a single
rescuer adult CPR?
A. 15:2
B. 30:2
C. 20:2
D. 10:2
Answer: B
Rationale: The 30:2 ratio balances circulation and
oxygenation for optimal resuscitation.
6. Where should hands be placed for chest compressions?
A. Upper chest
, B. Lower left chest
C. Center of the chest
D. Over the ribs
Answer: C
Rationale: Placing hands on the center of the chest
(sternum) ensures effective compression of the heart.
7. What should you do if the chest does not rise during
ventilation?
A. Increase breath force
B. Reposition the airway
C. Continue compressions only
D. Stop CPR
Answer: B
Rationale: Airway repositioning often resolves blockage
and allows proper ventilation.
8. What is the purpose of an AED?
A. Provide oxygen
B. Restart breathing
C. Deliver a shock to restore heart rhythm
D. Monitor pulse
Answer: C
Rationale: AEDs analyze heart rhythm and deliver shocks to
correct life-threatening arrhythmias.
, 9. When should an AED be used?
A. Only after CPR fails
B. As soon as it becomes available
C. After 10 minutes
D. Only by doctors
Answer: B
Rationale: Early defibrillation significantly increases
survival chances.
10. What is the first step in using an AED?
A. Deliver shock
B. Turn it on
C. Attach pads
D. Check pulse
Answer: B
Rationale: Turning on the AED activates voice prompts
guiding the rescuer.
11. What should you ensure before delivering a shock?
A. The patient is breathing
B. No one is touching the patient
C. Pads are removed
D. CPR is stopped permanently
Answer: B
Rationale: Ensuring no contact prevents accidental shock to
rescuers.
