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Gas Training, Chapter 1, CFESA 2nd Edition, 2025 Questions and Answers

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Gas Training, Chapter 1, CFESA 2nd Edition, 2025

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Gas Training, Chapter 1, CFESA 2nd
Edition, 2025

Where does natural gas come from? - answerWells deep in the ground.

Where does LP gas come from? - answer Byproduct of crude oil, and some is from
natural gas pockets.

What are the three different gases often termed LP gas? - answerPropane, Butane, and
Ethane.

Are LP tanks filled with gas or liquid? - answerLiquid.

What happens in a LP tank as gas is drawn off? - answerThe liquid boils off and creates
additional gas.

Does natural gas have an odor? - answerNo, not when it comes from the ground and is
cleaned.

What is meant by the "specific gravity" of a gas? - answerThe weight of the gas
compared to the air.

Is natural gas heavier or lighter than air? - answerLighter.

Is LP gas heavier or lighter than air? - answerHeavier.

Is LP gas more dangerous to work with than natural gas? - answerLP is heavier than air
so it does not dissipate, and is more volatile.

What is the heating value of a cubic foot of natural gas? - answerApproximately
1000Btu/cu. ft. (Actually varies from 950 to 1150.

What is the heating value for LP gas? - answer2500 Btu/cu. ft.

How should you check for gas leaks? - answerSoap bubbles, or electronic leak
detector.

Which gas is more volatile, natural or LP gas? Why? - answerLP. It has a higher Btu
rating per cubic foot, and is heavie than air so it does not dissipate.

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