Question

Define combustion breifly

Answer 1

here u go mate...
· Combustion. chemical reaction. Combustion, a chemical reaction between substances, usually including oxygen and usually accompanied by the generation of heat and light in the form of flame.

Answer 2

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Combustion-:

The process of heating a substance in presence of Oxygen to get heat and light is called combination.

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Ignition temperature:-

Temperature at which an object starts to burn or emit light is called ignition temperature.