Combustion

Hydrocarbon is made of what two elements?

• Carbon monoxide

• Hydrogen

• Carbon

• Oxygen

Combustion is also an _______ reaction

• Oxidation

• Decomposition

• Displacement

• Neutralisation

Which of these is NOT needed for a fire?

• Heat

• Fuel

• Oxygen

• Friction

Has unlimited oxygen

• Complete combustion

• Incomplete combustion

Has limited oxygen

• Complete combustion

• Incomplete combustion

What are the products of complete combustion?

• Water

• Carbon dioxide

• Water and carbon dioxide

• Water and carbon monoxide

Which poisonous gas is formed as a result of incomplete combustion?

• Coal gas

• carbon monoxide

• carbon dioxide

• nitrogen oxide

Which one of the following gases is used in combustion?

• Carbon monoxide

• Carbon dioxide

• Oxygen

• Nitrogen

What is essential for a combustion reaction to begin?

• Carbon dioxide

• Fuel 

• Fuel, oxygen and heat

• Water and oxygen

8.7: Combustion is when a __________ reacts with oxygen

• petrol

• fuel

• fire triangle

• carbon dioxide