Energy Sources and Combustion Quiz

Which of the following is a solid fuel?

• Natural gas

• Diesel

• Coal

• Hydrogen

Which of the following is a non-renewable source of energy?

• Solar energy

• Wind energy

• Coal

• Hydroelectric power

Which gas is most commonly emitted from the combustion of fossil fuels?

• Nitrogen

• Carbon dioxide

• Oxygen

• Hydrogen

Biofuels are derived from which of the following?

• Petroleum

• Fossil materials

• Organic materials

• Metal ores

Which of the following best describes the term 'calorific value'?

• The temperature at which a fuel burns

• The amount of energy released by burning a specific amount of fuel

• The quantity of fuel required to produce heat

• The amount of oxygen needed for complete combustion

In which scenario is complete combustion likely to occur?

• In the presence of excess fuel

• With limited air supply

• When sufficient oxygen is available

• At low temperatures

Which statement correctly explains the environmental impact of burning fossil fuels?

• Fossil fuels release large amounts of water vapor into the atmosphere

• Fossil fuels release greenhouse gases, contributing to global warming

• Fossil fuels improve air quality by releasing oxygen

• Fossil fuels reduce the carbon footprint compared to biofuels

A coal power plant burns 1000 kg of coal that produces 30,000 MJ of energy. What is the calorific value of the coal?

• 3 MJ/kg

• 30 MJ/kg

• 300 MJ/kg

• 3000 MJ/kg

If a car runs on biodiesel instead of petroleum-based diesel, which of the following is likely to decrease?

• Energy efficiency

• Carbon dioxide emissions

• Fuel cost

• Engine performance

A chemical reaction in a car engine produces carbon monoxide instead of carbon dioxide. What is the likely cause?

• Complete combustion

• Excess oxygen

• Incomplete combustion

• Low fuel efficiency