Testube spirit lamp matchbox incense stick potassium pregnant at 17 materials required to prove oxygen helps in burning calories needed to burn a material relation temperature none of the above which option is correct
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Take two burning candles and two glasses. Put each candle under each glass separately. One should have oxygen inside the glass and the other shouldn't have it. The glass in which the oxygen is present will last longer that means the candle burns until all the oxygen inside the glass is used up. This shows that oxygen helps in burning
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