PHS Edexcel c16 Fuels: Hydrogen and Diesel Fuel Quiz

What do diesel cars produce that causes air pollution?

• Water vapor

• Oxides of nitrogen

• Carbon monoxide

• Methane

How are oxides of nitrogen formed in diesel engines?

• By burning sulfur

• By high-temperature combustion

• By mixing with water

• By low-temperature combustion

What is a hydrocarbon fuel used for some cars and trains?

• Hydrogen

• Diesel oil

• Ethanol

• Natural gas

What is one environmental benefit of using hydrogen as a fuel?

• Produces sulfur dioxide

• Produces only water

• Produces nitrogen oxides

• Produces carbon monoxide

What is a common impurity in diesel oil that needs to be removed?

• Nitrogen

• Sulfur

• Oxygen

• Carbon

What is one reason for removing sulfur from diesel oil?

• To increase viscosity

• To reduce engine wear

• To prevent acid rain

• To improve smell

Cracking produces alkanes and alkenes. Why are alkanes described as saturated but alkenes as unsaturated?

• Alkanes have single bonds; alkenes have double bonds.

• Alkanes have double bonds; alkenes have single bonds.

• Alkanes have triple bonds; alkenes have double bonds.

• Alkanes have single bonds; alkenes have triple bonds.

What is the formula of pentane, an alkane with five carbon atoms?

• C₅H₉

• C₅H₁₀

• C₅H₁₁

• C₅H₁₂

Carbon monoxide is toxic because:

• It binds with hemoglobin, reducing oxygen transport.

• It increases oxygen levels in the blood.

• It decreases carbon dioxide levels in the blood.

• It enhances the immune system.

Identify the balanced equation for the complete combustion of propane.

• C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

• C₃H₈ + 4O₂ → 3CO₂ + 4H₂O

• C₃H₈ + 6O₂ → 3CO₂ + 4H₂O

• C₃H₈ + 3O₂ → 3CO₂ + 4H₂O