4. COMBUSTION AND FLAME
Combustion involves the chemical reaction of a substance with oxygen, resulting in heat and light. Various fuels such as wood, coal, and LPG are used for different purposes, impacting both energy efficiency and environmental safety. The chapter also covers the conditions for combustion, types of flames produced, and methods for controlling fire, emphasizing safety measures and environmental considerations related to fuel consumption.
Enroll to start learning
You've not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- Substances that burn in air are called combustible.
- Oxygen (in air) is essential for combustion.
- During combustion, heat and light are released.
- The ignition temperature is the lowest temperature at which a combustible substance ignites.
- Inflammable substances have low ignition temperatures.
- Fire can be controlled by removing fuel, air, or heat.
- Water is commonly used to extinguish fires, but not suitable for electrical or oil-related fires.
- Different types of combustion include rapid combustion, spontaneous combustion, and explosions.
- Flames have different zones: dark zone, luminous zone, and non-luminous zone.
- An ideal fuel is inexpensive, readily available, highly combustible, and environmentally friendly.
Key Concepts
Additional Learning Materials
Supplementary resources to enhance your learning experience.