Burning is a reaction between oxygen and a substance that produces heat, True, False, Things keep burning even if the place is closed and the air is not, True, False, Fresh air flowing in from the outside is very necessary for the candle, True, False, Atmospheric air has a role in burning., True, False, Nitrogen gas doesn't help in burning., True, False, The percentage of carbon dioxide gas in atmospheric air is about 21%, True, False, Limewater is used to detect the decrease in the amount of oxygen gas., True, False

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