Question

Define combustion and Explain different types of combustion​

Answer 1

Answer:

Combustion, or burning, is a high-temperature exothermic redox chemical reaction between a fuel and an oxidant, usually atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke.

Answer 2

$\star\;{\underline{\underline{\sf{\orange{\;Combustion \;}}}}}$

The chemical process in which a substance burns in air, or oxygen, with the release of heat and light energy is called Combustion.

✦ Types of Combustion ✦

$\large\underline{\underline{\rm\red{Slow \ Combustion }:}}$

1) When a combustible material burns at a slow, or moderate rate, it's combustion is called slow combustion.

2) Slow combustion usually occurs when there's is an insufficient supply of air.

3) This type of combustion never gets really completed.

Examples : Cowdung cakes, wood, etc.

$\large\underline{\underline{\rm\red{Rapid\:Combustion }:}}$

1) When a combustible substance burns at a fast rate, its combustion is called rapid combustion.

2) Rapid combustion occurs when there is a sufficient supply of air.

3) The combustion, in such cases, is complete.

Examples :- Gaseous fuels

$\large\underline{\underline{\rm\red{Spontaneous\:Combustion}:}}$

When a combustible substance catches fire on its own, even at room temperature, its combusion is referred to as spontaneous combustion.

Example : A piece of white phosphorus, or a piece of sodium metal, are observed to catch fire on its own when kept in air.

$\large\underline{\underline{\rm\red{Explosive\:Combustion }:}}$

1) When a combustible material and air burns completely, in a very short span of time us a closed space, an explosive combustion can take place.

2) The combustible material, in such a case, burns uncontrollably in free supply of air and releases a very large amount of heat.

3) This often produces the sound of an explosion.

Examples: Burning of crackers

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