FDNY G-22 LPG/CNG USE EXAM – QUESTIONS AND ANSWERS | VERIFIED AND WELL
DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE
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CORE DOMAINS
- Liquefied Petroleum Gas (LPG) Properties and Behavior
- Compressed Natural Gas (CNG) Systems and Characteristics
- Cylinder Handling, Storage, and Transportation Safety
- Fire Prevention and Emergency Response Procedures
- FDNY Regulations and Hazardous Materials Compliance
- Leak Detection, Ventilation, and Gas Monitoring
- Pressure Systems, Valves, and Regulators
- Incident Command and Workplace Safety Protocols
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INTRODUCTION
This examination assesses the candidate’s knowledge of LPG an
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SECTION ONE: QUESTIONS 1–50
,Question 1
What is the primary characteristic of LPG that makes it hazardous in confined spaces?
A. It is non-flammable
B. It is lighter than air
C. It is heavier than air
D. It is non-toxic
🟢 Correct Answer: C. It is heavier than air
🔴 Explanation: LPG settles in low areas, increasing explosion risk in confined spaces.
Question 2
CNG is primarily composed of which gas?
A. Propane
B. Methane
C. Butane
D. Ethane
🟢 Correct Answer: B. Methane
🔴 Explanation: Natural gas used in CNG systems is mostly methane.
,Question 3
The odor added to LPG for leak detection is called:
A. Carbon dioxide
B. Mercaptan
C. Benzene
D. Chlorine
🟢 Correct Answer: B. Mercaptan
🔴 Explanation: Mercaptan gives LPG a strong odor for leak detection.
Question 4
Which action should be taken first in a suspected gas leak?
A. Turn on lights
B. Evacuate the area
C. Open flames for inspection
D. Use elevators
🟢 Correct Answer: B. Evacuate the area
🔴 Explanation: Immediate evacuation prevents ignition and exposure.
, Question 5
CNG is stored at what condition?
A. Low pressure liquid
B. High pressure gas
C. Cryogenic liquid
D. Solid compressed form
🟢 Correct Answer: B. High pressure gas
🔴 Explanation: CNG is stored under high pressure, typically in cylinders.
Question 6
Which is a common use of LPG?
A. Nuclear fuel
B. Cooking and heating
C. Electrical wiring
D. Cooling systems
🟢 Correct Answer: B. Cooking and heating
🔴 Explanation: LPG is widely used for domestic heating and cooking.
DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE
*
CORE DOMAINS
- Liquefied Petroleum Gas (LPG) Properties and Behavior
- Compressed Natural Gas (CNG) Systems and Characteristics
- Cylinder Handling, Storage, and Transportation Safety
- Fire Prevention and Emergency Response Procedures
- FDNY Regulations and Hazardous Materials Compliance
- Leak Detection, Ventilation, and Gas Monitoring
- Pressure Systems, Valves, and Regulators
- Incident Command and Workplace Safety Protocols
*
*
INTRODUCTION
This examination assesses the candidate’s knowledge of LPG an
*
SECTION ONE: QUESTIONS 1–50
,Question 1
What is the primary characteristic of LPG that makes it hazardous in confined spaces?
A. It is non-flammable
B. It is lighter than air
C. It is heavier than air
D. It is non-toxic
🟢 Correct Answer: C. It is heavier than air
🔴 Explanation: LPG settles in low areas, increasing explosion risk in confined spaces.
Question 2
CNG is primarily composed of which gas?
A. Propane
B. Methane
C. Butane
D. Ethane
🟢 Correct Answer: B. Methane
🔴 Explanation: Natural gas used in CNG systems is mostly methane.
,Question 3
The odor added to LPG for leak detection is called:
A. Carbon dioxide
B. Mercaptan
C. Benzene
D. Chlorine
🟢 Correct Answer: B. Mercaptan
🔴 Explanation: Mercaptan gives LPG a strong odor for leak detection.
Question 4
Which action should be taken first in a suspected gas leak?
A. Turn on lights
B. Evacuate the area
C. Open flames for inspection
D. Use elevators
🟢 Correct Answer: B. Evacuate the area
🔴 Explanation: Immediate evacuation prevents ignition and exposure.
, Question 5
CNG is stored at what condition?
A. Low pressure liquid
B. High pressure gas
C. Cryogenic liquid
D. Solid compressed form
🟢 Correct Answer: B. High pressure gas
🔴 Explanation: CNG is stored under high pressure, typically in cylinders.
Question 6
Which is a common use of LPG?
A. Nuclear fuel
B. Cooking and heating
C. Electrical wiring
D. Cooling systems
🟢 Correct Answer: B. Cooking and heating
🔴 Explanation: LPG is widely used for domestic heating and cooking.
