Which of the following fuels emits no smoke?

The correct answer is Charcoal.

Key Points

• Charcoal is a carbon-rich material derived from burning wood or other organic matter in the absence of oxygen.
• It is known for producing minimal smoke compared to other fuels.
• Charcoal is often used in domestic cooking, particularly in barbecues, due to its smokeless combustion.
• It is also used in industrial processes where clean and efficient heat is required.
• Charcoal production involves the process of pyrolysis, which ensures the absence of smoke during its use.

Additional Information

• Pyrolysis:
  • It is a thermochemical decomposition of organic material at elevated temperatures in the absence of oxygen.
  • Pyrolysis is used to produce charcoal, biochar, and other chemicals.
  • This process ensures that volatile substances are removed, resulting in a smokeless fuel.
• Smoke Emissions and Health:
  • Smoke from burning fuels contains particulate matter and toxic gases that can be harmful to health.
  • Inhaling smoke can cause respiratory issues and other health problems.
• Applications of Charcoal:
  • Apart from cooking, charcoal is used in water filtration, air purification, and as an industrial fuel.
  • It is also used in metallurgical processes, such as the production of iron in blast furnaces.
• Environmental Impact:
  • While charcoal produces less smoke, its production can lead to deforestation if not managed sustainably.
  • Using sustainably sourced wood for charcoal production can mitigate environmental impacts.