Question

what is combustion and examples and it's type
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Answer 1

Answer:

combustion is the process of burning of a substance in air/oxygen with simultaneous evolution of heat and light

type of combustion

1. rapid combustion

2. slow combustion

3.incomplete and complete combustion

Answer 2

Answer:

The burning of a material or object by the accelerated oxidation of its own materials without heat from any external source is known as spontaneous combustion.

Example :

• Burning of sulfur in the air
• An explosion of hydrogen in air
• Burning of Wax candle
• Combustion of petrol in a car’s engine
• Burning of natural gas in a bunsen burner
• A bush fire means wood cellulose and other fuels burn in oxygen

Types :

1. Complete combustion: When the reaction takes place in the presence of abundant Oxygen, the substances combine with Oxygen to their maximum extent. Such reactions have heat and light as a visible by-product.
2. Incomplete combustion: These are defined as the reactions that occur in the absence of sufficient oxygen because of which substances are unable to burn completely. Such reactions leave Soot in the container due to this process along with the formation of Carbon monoxide which is an air pollutant.
3. Rapid Combustion:Another type of combustion is Rapid Combustion. Rapid energy needs external heat energy for the reaction to occur. The combustion produces a large amount of heat and light energy and does so rapidly. The combustion will carry on as long as the fuel is available
4. Spontaneous Combustion : As the name suggests the combustion occurs spontaneously. This means that it requires no external energy for the combustion to start. It happens due to self-heating. A substance with low-ignition temperatures gets heated and this heat is unable to escape.The temperature rises above ignition point and in the presence of sufficient oxygen combustion will happen. The reaction of alkali metals with water is an example.
5. Explosive Combustion : Explosive Combustion happens when the reaction occurs very rapidly. The reaction occurs when something ignites to produce heat, light and sound energy, The simple way to describe is it to call it an explosion. Some classic examples are firecrackers or blowing up of dynamite.