G71 Supervision of Rooftop LPG Operations
Newest (2025 - 2026 Update) From Real
Past Papers Questions – A Set Of 100 Most
Common Exam Frequently Tested
Questions And Answers In Details 100%
Verified Exam Highly Recommendable
Grade A+ (Verified Answers) Plus
Rationales | Instant Download Pdf
1. Before beginning any rooftop LPG operation, the supervisor's primary
responsibility is to:
A. Verify the weather forecast only
B. Ensure workers have lunch breaks scheduled
C. Confirm all work is performed safely and according to applicable procedures
D. Arrange delivery of replacement cylinders
Answer: C
The supervisor is responsible for ensuring all rooftop LPG operations comply
with safety procedures, regulations, and accepted industry practices. This
includes verifying hazards, worker qualifications, and safe work methods before
operations begin.
2. Liquefied Petroleum Gas is primarily stored in cylinders as:
A. A solid
B. A vapor only
,C. A liquid under pressure
D. A compressed powder
Answer: C
LPG is stored as a liquid under pressure and vaporizes when released.
Understanding this property is essential for safe handling.
3. Which gas is commonly used in commercial LPG systems?
A. Oxygen
B. Nitrogen
C. Propane
D. Carbon dioxide
Answer: C
Propane is the most common LPG used in rooftop installations because of its
reliable vaporization characteristics.
4. Before replacing an LPG cylinder, the supervisor should ensure:
A. Flames remain lit
B. Nearby ignition sources are eliminated
C. Equipment remains operating
D. Cylinder valves remain open
Answer: B
Removing ignition sources minimizes fire and explosion hazards during cylinder
replacement.
5. LPG vapor is generally:
A. Lighter than air
B. Equal in weight to air
,C. Heavier than air
D. Invisible because it rises immediately
Answer: C
LPG vapors are heavier than air and can accumulate in low areas, increasing fire
risk.
6. A damaged LPG cylinder should:
A. Continue to be used until empty
B. Be painted immediately
C. Be removed from service
D. Be repaired by the building owner
Answer: C
Damaged cylinders must be removed from service because structural defects can
lead to leaks or catastrophic failure.
7. Before work begins, rooftop access should be:
A. Left unrestricted
B. Used for storage
C. Controlled to prevent unauthorized entry
D. Locked from emergency responders
Answer: C
Restricting unauthorized access helps protect workers and the public during LPG
operations.
8. Which condition requires immediate investigation?
A. Normal regulator operation
B. Properly labeled cylinders
, C. The odor of gas near equipment
D. Approved cylinder restraints
Answer: C
The distinctive odorant added to LPG indicates a possible gas leak, requiring
immediate investigation and corrective action.
9. The purpose of a cylinder valve is to:
A. Increase gas pressure
B. Measure gas temperature
C. Control the flow of LPG
D. Secure the cylinder to the roof
Answer: C
Cylinder valves are designed to control gas flow safely into connected
equipment.
10.Personal protective equipment should be:
A. Optional for supervisors
B. Used only during emergencies
C. Appropriate for the specific task and hazards
D. Worn only by new employees
Answer: C
Proper personal protective equipment (PPE) reduces the risk of injury and must
match the hazards associated with rooftop LPG operations.
I can continue immediately with Questions 11–20 in the same format.
G71 Supervision of Rooftop LPG Operations
Mock Examination (Questions 11–50)
Newest (2025 - 2026 Update) From Real
Past Papers Questions – A Set Of 100 Most
Common Exam Frequently Tested
Questions And Answers In Details 100%
Verified Exam Highly Recommendable
Grade A+ (Verified Answers) Plus
Rationales | Instant Download Pdf
1. Before beginning any rooftop LPG operation, the supervisor's primary
responsibility is to:
A. Verify the weather forecast only
B. Ensure workers have lunch breaks scheduled
C. Confirm all work is performed safely and according to applicable procedures
D. Arrange delivery of replacement cylinders
Answer: C
The supervisor is responsible for ensuring all rooftop LPG operations comply
with safety procedures, regulations, and accepted industry practices. This
includes verifying hazards, worker qualifications, and safe work methods before
operations begin.
2. Liquefied Petroleum Gas is primarily stored in cylinders as:
A. A solid
B. A vapor only
,C. A liquid under pressure
D. A compressed powder
Answer: C
LPG is stored as a liquid under pressure and vaporizes when released.
Understanding this property is essential for safe handling.
3. Which gas is commonly used in commercial LPG systems?
A. Oxygen
B. Nitrogen
C. Propane
D. Carbon dioxide
Answer: C
Propane is the most common LPG used in rooftop installations because of its
reliable vaporization characteristics.
4. Before replacing an LPG cylinder, the supervisor should ensure:
A. Flames remain lit
B. Nearby ignition sources are eliminated
C. Equipment remains operating
D. Cylinder valves remain open
Answer: B
Removing ignition sources minimizes fire and explosion hazards during cylinder
replacement.
5. LPG vapor is generally:
A. Lighter than air
B. Equal in weight to air
,C. Heavier than air
D. Invisible because it rises immediately
Answer: C
LPG vapors are heavier than air and can accumulate in low areas, increasing fire
risk.
6. A damaged LPG cylinder should:
A. Continue to be used until empty
B. Be painted immediately
C. Be removed from service
D. Be repaired by the building owner
Answer: C
Damaged cylinders must be removed from service because structural defects can
lead to leaks or catastrophic failure.
7. Before work begins, rooftop access should be:
A. Left unrestricted
B. Used for storage
C. Controlled to prevent unauthorized entry
D. Locked from emergency responders
Answer: C
Restricting unauthorized access helps protect workers and the public during LPG
operations.
8. Which condition requires immediate investigation?
A. Normal regulator operation
B. Properly labeled cylinders
, C. The odor of gas near equipment
D. Approved cylinder restraints
Answer: C
The distinctive odorant added to LPG indicates a possible gas leak, requiring
immediate investigation and corrective action.
9. The purpose of a cylinder valve is to:
A. Increase gas pressure
B. Measure gas temperature
C. Control the flow of LPG
D. Secure the cylinder to the roof
Answer: C
Cylinder valves are designed to control gas flow safely into connected
equipment.
10.Personal protective equipment should be:
A. Optional for supervisors
B. Used only during emergencies
C. Appropriate for the specific task and hazards
D. Worn only by new employees
Answer: C
Proper personal protective equipment (PPE) reduces the risk of injury and must
match the hazards associated with rooftop LPG operations.
I can continue immediately with Questions 11–20 in the same format.
G71 Supervision of Rooftop LPG Operations
Mock Examination (Questions 11–50)
