Gas Fitter Practice Test

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Prepare effectively for the Gas Fitter Exam with our comprehensive study materials. Access multiple-choice questions, detailed explanations, and hints that will help you achieve success in your certification. Get ready to demonstrate your knowledge and skills!

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What is the primary component of natural gas?

Butane
Propylene
Methane
Ethane

The correct answer is: Methane

The primary component of natural gas is methane, which typically makes up about 70% to 90% of natural gas by volume. Methane is a simple hydrocarbon consisting of one carbon atom and four hydrogen atoms (CH4). It is produced naturally from decomposing organic matter underground and is characterized by being colorless, odorless, and flammable, making it a valuable fuel source for heating, electricity generation, and various industrial processes. In the context of natural gas, other hydrocarbons like butane and ethane are found in smaller concentrations and are categorized as natural gas liquids (NGLs). While propylene is used in the industry, it is generally not a primary component of natural gas and is instead a byproduct associated with the production of propane and gasoline. Understanding the composition of natural gas is essential for gas fitters, as it impacts safety, combustion efficiency, and equipment selection.