Texas Compressed Natural Gas (CNG) Delivery Truck Driver Practice Exam

Natural gas primarily consists of methane, which is a simple hydrocarbon made up of one carbon atom and four hydrogen atoms (CH4). Methane is the dominant component of natural gas, typically accounting for about 70-90% of its composition. Its chemical structure makes it an efficient and clean-burning fuel, which is one of the reasons it is used extensively for heating, electricity generation, and as a vehicle fuel. While ethane and propane are also hydrocarbons found in natural gas, they are present in smaller amounts compared to methane. Carbon dioxide is a component produced during the combustion of natural gas but is not a primary constituent of the gas itself. Understanding the composition of natural gas is essential for drivers and operators dealing with CNG (Compressed Natural Gas) applications, as it influences the performance, emissions, and handling characteristics of the fuel.