BLASTING CERTIFICATE
QUESTIONS WITH 100%
PASSED ANSWERS!!
1. What is the primary responsibility of a certified blaster?
A. Mixing explosives
B. Loading explosives
C. Ensuring safe and legal blasting operations
D. Transporting explosives
Answer: C
2. Which authority typically issues blasting certificates or licenses?
A. Fire department
B. Mining or occupational safety authority
C. Police department
D. Construction company
Answer: B
3. Which explosive is most commonly used in surface blasting?
A. TNT
B. Black powder
C. ANFO
D. Dynamite
,Answer: C
4. ANFO stands for:
A. Ammonium Nitrate Fuel Oil
B. Advanced Nitrogen Fuel Oxide
C. Ammonium Nitric Flame Oil
D. Activated Nitrate Formulation
Answer: A
5. Which condition makes ANFO ineffective?
A. Cold weather
B. Wet conditions
C. High altitude
D. Hard rock
Answer: B
6. What is the purpose of a detonator?
A. To store explosives
B. To initiate the main explosive charge
C. To increase blast vibration
D. To suppress dust
Answer: B
7. Which detonator is considered the safest against stray electrical currents?
A. Electric detonator
B. Non-electric (shock tube) detonator
C. Fuse detonator
D. Plain detonator
,Answer: B
8. What is the minimum safe distance called during a blast?
A. Blast radius
B. Exclusion zone
C. Buffer area
D. Safe boundary
Answer: B
9. What must be done before firing a blast?
A. Sound warning signals
B. Clear the blast area
C. Post guards
D. All of the above
Answer: D
10. What is a misfire?
A. A delayed blast
B. An explosion that causes damage
C. A failure of an explosive to detonate
D. An incorrect blast design
Answer: C
11. How long should a blaster wait before approaching a suspected misfire?
A. Immediately
B. 5 minutes
C. At least 30 minutes
D. 1 hour
, Answer: C
12. Which document outlines legal blasting procedures and safety rules?
A. Company policy
B. Safety Data Sheet
C. National blasting regulations
D. Explosive label
Answer: C
13. What is stemming in blasting?
A. Drilling holes
B. Filling boreholes with inert material
C. Loading explosives
D. Wiring detonators
Answer: B
14. Proper stemming helps to:
A. Increase noise
B. Reduce flyrock
C. Increase vibration
D. Cause misfires
Answer: B
15. Flyrock refers to:
A. Dust clouds
B. Thrown rock fragments
C. Ground vibration
D. Air pressure
QUESTIONS WITH 100%
PASSED ANSWERS!!
1. What is the primary responsibility of a certified blaster?
A. Mixing explosives
B. Loading explosives
C. Ensuring safe and legal blasting operations
D. Transporting explosives
Answer: C
2. Which authority typically issues blasting certificates or licenses?
A. Fire department
B. Mining or occupational safety authority
C. Police department
D. Construction company
Answer: B
3. Which explosive is most commonly used in surface blasting?
A. TNT
B. Black powder
C. ANFO
D. Dynamite
,Answer: C
4. ANFO stands for:
A. Ammonium Nitrate Fuel Oil
B. Advanced Nitrogen Fuel Oxide
C. Ammonium Nitric Flame Oil
D. Activated Nitrate Formulation
Answer: A
5. Which condition makes ANFO ineffective?
A. Cold weather
B. Wet conditions
C. High altitude
D. Hard rock
Answer: B
6. What is the purpose of a detonator?
A. To store explosives
B. To initiate the main explosive charge
C. To increase blast vibration
D. To suppress dust
Answer: B
7. Which detonator is considered the safest against stray electrical currents?
A. Electric detonator
B. Non-electric (shock tube) detonator
C. Fuse detonator
D. Plain detonator
,Answer: B
8. What is the minimum safe distance called during a blast?
A. Blast radius
B. Exclusion zone
C. Buffer area
D. Safe boundary
Answer: B
9. What must be done before firing a blast?
A. Sound warning signals
B. Clear the blast area
C. Post guards
D. All of the above
Answer: D
10. What is a misfire?
A. A delayed blast
B. An explosion that causes damage
C. A failure of an explosive to detonate
D. An incorrect blast design
Answer: C
11. How long should a blaster wait before approaching a suspected misfire?
A. Immediately
B. 5 minutes
C. At least 30 minutes
D. 1 hour
, Answer: C
12. Which document outlines legal blasting procedures and safety rules?
A. Company policy
B. Safety Data Sheet
C. National blasting regulations
D. Explosive label
Answer: C
13. What is stemming in blasting?
A. Drilling holes
B. Filling boreholes with inert material
C. Loading explosives
D. Wiring detonators
Answer: B
14. Proper stemming helps to:
A. Increase noise
B. Reduce flyrock
C. Increase vibration
D. Cause misfires
Answer: B
15. Flyrock refers to:
A. Dust clouds
B. Thrown rock fragments
C. Ground vibration
D. Air pressure
