Hydrocarbon Fuels

What is the primary characteristic of a hydrocarbon fuel?

• It absorbs oxygen from the air

• It burns in oxygen to release energy

• It is primarily composed of nitrogen

• It is a renewable resource

What type of reaction occurs when a fuel is burned?

• Endothermic reaction

• Photosynthesis

• Exothermic reaction

• Decomposition reaction

According to the fire triangle, which element is not a component needed to control fires?

• Heat

• Fuel

• Oxygen

• Water

Which of the following is not a fossil fuel?

• Coal

• Natural gas

• Biomass

• Oil

What is the environmental impact of sulfur dioxide produced by burning fossil fuels?

• It contributes to the greenhouse effect

• It increases atmospheric nitrogen

• It dissolves in rain water to produce acid rain

• It reduces solar radiation

What must be considered when evaluating different energy sources?

• Their aesthetic impact

• Their color and form

• Their impact on the carbon cycle

• Their smell

What elements do hydrocarbon molecules contain?

• Carbon and oxygen

• Hydrogen and oxygen

• Carbon and hydrogen

• Nitrogen and hydrogen

What are the main products when hydrocarbons burn in a plentiful supply of oxygen?

• Carbon monoxide and hydrogen

• Carbon dioxide and water

• Carbon and water vapor

• Hydrogen and carbon monoxide

Which gas is a greenhouse gas that contributes to global warming?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

What role do catalytic converters play in vehicles?

• They increase fuel efficiency by converting gases into liquids

• They reduce the output of carbon monoxide and other harmful gases by converting them into harmless gases

• They enhance the speed of the vehicle

• They filter out solid particles from the exhaust