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JAMB Chemistry 1998 Question 13

Question 13

Air

The property used in obtaining oxygen and nitrogen industrially from air is the

  1. A.boiling point
  2. B.density
  3. C.rate of diffusion
  4. D.solubility
Show the answer and explanation

Answer: A (boiling point)

Explanation

Air is liquefied and then fractionally distilled; nitrogen and oxygen separate because they have different boiling points.