The gas that the flame uses during burning is ......gas., nitrogen, oxygen, What happens to a burning candle when it is covered with a glass jar and completely closed?, It burns brighter, It goes out after a very long time, The percentage of nitrogen gas in atmospheric air is about, 21, 78, The gas whose percentage increases in the air after the candle burns is, oxygen, carbon dioxide., The liquid that is used to detect the presence of carbon dioxide gas is, limewater, salt solution, The color of limewater changes from colorless to milky white due to, decrease in the amount of oxygen, increase in the amount of carbon dioxide.

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