Question

what is combustion and define rapid combustion.​

Answer 1

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Combustion is a chemical reaction in which a substance is burnt with the help of oxygen present in the air to produce heat and light.

Rapid combustion is the one in which a substance burns rapidly to produce heat and light. Ex- burning of matchstick, combustion of LPG, etc.

Substances which undergo rapid combustion have low ignition temperature.

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Answer 2

Answer:

Combustion- The burning of a substance in the presence of oxygen is known as combustion.

Rapid Combustion- It occurs when a substance burns rapidly and releases large amounts of heat. For example, burning of matchstick and combustion of LPG gas. This is usually attained by introducing external heat. Substances which undergo rapid combustion have lower ignition temperature.

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