Pure oxygen is obtained by liquefying air and then boiling off the nitrogen and argon.

Name: Pure oxygen is obtained by liquefying air and then boiling off the nitrogen and argon.
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Quizplus · Accepted Answer

This is true. Air is first liquefied and then distilled to separate out the different components, including oxygen, nitrogen, and argon. By adjusting the temperature and pressure, the oxygen can be boiled off and collected as a highly concentrated gas.

Pure Oxygen Is Obtained by Liquefying Air and Then Boiling