Oxygen is prepared by the fractional distillation ofA. WaterB. Liquid – InterviewSolution

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1.	Oxygen is prepared by the fractional distillation ofA. WaterB. Liquid airC. Hydrogen peroxideD. Heavy water.
Answer» Correct Answer - B Liquid air is a mixture of mostly liquid nitrogen and liquid oxygen and the difference in their boiling points is about `12.8^(@)C`. So these two are easily separated by fractional evaporation when nitrogen being more volatile escapes first.

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