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First we should fill atmospheric air into a huge container using a tube which is consisting with a filter & sulphuric acid. Then cool it upto -200 centigrades .At that stage you can obtain the liqiud state of atmosphere. And then let it open to the natural atmospheric temparature. First you can obtain Nitrogen at -196 centigrades. Then you can extract it easily using a tube. then at -183 centigrades you can obtain the gaseous state of oxygen to another container.

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11y ago
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Q: How do you extract oxygen and nitrogen?
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