CFESA GAS REVIEW QUESTIONS Latest Update 2025-2026 Actual Exam Questions with 100% Verified Correct Answers Guaranteed A+ Verified by Professor
Are LP tanks filled with gas or liquid? - CORRECT ANSWER: Liquid
Does natural gas have an odor? - CORRECT ANSWER: No
How should you check for leaks? - CORRECT ANSWER: Soapy bubbles or combustible
leak detectors
Is LP gas heavier or lighter than air - CORRECT ANSWER: Heavier
Is natural gas heavier or lighter than air? - CORRECT ANSWER: Lighter
What are three gases often termed LP? - CORRECT ANSWER: Propane, butane,
ethane
What happens in a LP tank as gas is drawn off? - CORRECT ANSWER: Pressure in the tank begins to fall and so does the boiling point.
What is specific gravity of a gas? - CORRECT ANSWER: The weight of the gas
compared to the weight of air, specific gravity of air is 1. Anything lower than one will float.
What is the hearing value of a cubic foot of natural gas? - CORRECT ANSWER:
950btus to 1150btus
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