describe an experiment to show that air contain oxygen
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take a glowing wooden splinter and blow it off.
if the wooden splinter rekindles there is oxygen present in air...
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take a candle and light it put a jar over the candle as we know oxygen helps in burning so the candle lights till the oxygen is in the jar after sometime the candle be extinguished due to the stop of supplies of oxygen
this show that the air contains oxygen
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