Class 8 Exam > Class 8 Videos > Chapter 6 - Combustion and Flame - Brief of Complete Chapter, Class 8 Science
Chapter 6 - Combustion and Flame - Brief of Complete Chapter, Class 8 Science Video Lecture
FAQs on Chapter 6 - Combustion and Flame - Brief of Complete Chapter, Class 8 Science Video Lecture
| 1. What is combustion? |  |
Ans. Combustion is a chemical process in which a substance reacts with oxygen to produce heat and light. It is a form of rapid oxidation reaction.
| 2. What are the conditions necessary for combustion to occur? | |
Ans. The conditions necessary for combustion to occur are the presence of a fuel, oxygen, and heat. These three components form the fire triangle.
| 3. What is the difference between complete combustion and incomplete combustion? | |
Ans. Complete combustion occurs when a fuel reacts with oxygen completely, producing carbon dioxide and water as byproducts. Incomplete combustion occurs when a fuel does not get enough oxygen and produces carbon monoxide and soot as byproducts.
| 4. How do flames form during combustion? | |
Ans. Flames form when the gases released during combustion become hot enough to emit visible light. The high temperature causes excitation of atoms and molecules, resulting in the emission of light.
| 5. What are the different types of flames? | |
Ans. The different types of flames include a yellow flame, which indicates incomplete combustion, and a blue flame, which indicates complete combustion. Yellow flames are often seen in candles and gas stoves, while blue flames are commonly observed in Bunsen burners.
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