G2 Gas Fitter Practice Exam

What is the air-to-gas ratio for propane?

1. 1 to 5

2. 1 to 8

3. 1 to 10

4. 1 to 15

The correct answer is: 1 to 10

The air-to-gas ratio for propane is commonly recognized as approximately 1 to 10. This ratio signifies that for every part of propane (the gas), there are ten parts of air. This specific ratio is critical for achieving complete combustion, ensuring that the propane burns efficiently and safely while minimizing the production of harmful byproducts. Understanding this ratio is essential for gas fitters as it influences burner design and performance, helping to optimize the heating process and prevent issues such as soot formation or incomplete combustion, which could lead to carbon monoxide production. Adopting the correct air-to-gas ratio is vital for operating appliances safely and effectively, ensuring compliance with regulatory standards and maintaining a safe environment.