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The property used in the industrial preparation of nitrog...

The property used in the industrial preparation of nitrogen and oxygen from air is?

A.

rate of diffusion

B.

density

C.

boiling point

D.

solubility

View answer & explanation

Correct answer is C

Fractional distillation of liquefied air, with Nitrogen distilling as a vapor at a lower boiling point of -196°C while O2 is left as a liquid. 

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