Question

why oxygen is necessary for burning?​

Answer 1

the presence of oxygen is required for burning this can be proved by placing a burning candle under a packed metal box the candle will not burn any more as the air O2 in the air closed in the box will fall off this will show that oxygen is required for burning .

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Answer 2

Answer:

Oxygen is necessary for burning because it supports combustion and it is the non supporter of combustion.

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