alleryLiquid dinitrogen distils out first, boiling at about:
A60 kelvin
B40 kelvin
C77 kelvin
D90 kelvin
Answer & Solution
Correct answer: C. 77 kelvin
1. Liquid air holds both nitrogen and oxygen.
2. Nitrogen has the lower boiling point of the two.
3. It boils at 77.2 kelvin and leaves first.
_Source: syllabus Chemistry, Chapter 7, The p-Block Elements._
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