Coal Formation and Characteristics Quiz

What is the first stage in the formation of coal from living plants and animals?

• Lignite

• Sub-bituminous

• Bituminous

Which type of coal has the highest carbon content and hardness?

• Lignite

• Sub-bituminous

• Bituminous

• Anthracite

As coal forms from lignite to anthracite, what happens to the water content?

• It increases

• It decreases

• It remains the same

• It fluctuates

What is released when fossil fuels burn?

• Light energy

• Thermal energy

• Electrical energy

• Sound energy

What is combustion?

• A physical change involving water

• A chemical reaction involving oxygen

• A biological process involving carbon dioxide

• A mechanical process involving heat

What is propane commonly used for?

• Cooling systems

• Immediate heat

• Generating electricity

• Water purification

What does the combustion of propane produce?

• Electrical energy

• Nuclear energy

• Thermal energy

• Chemical energy

Which of the following is NOT a use of propane combustion?

• Heating buildings

• Running some motor vehicles

• Powering solar panels

• Cooking food

Which elements make up propane?

• Carbon and nitrogen

• Hydrogen and oxygen

• Carbon and hydrogen

• Oxygen and nitrogen

What are the products of the complete combustion of propane?

• Carbon monoxide and water vapor

• Carbon dioxide and water vapor

• Carbon dioxide and hydrogen gas

• Carbon monoxide and hydrogen gas