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Question
The correct increasing order of the boiling points of liquid oxygen, liquid argon and liquid nitrogen present in liquid air is :
Options
nitrogen, oxygen, argon
nitrogen, argon, oxygen
argon, oxygen, nitrogen
oxygen, argon, nitrogen
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Solution
nitrogen, argon, oxygen
Boiling point of liquid nitrogen, liquid argon and liquid oxygen are -196°C, -186°C and -183°C respectively. So, nitrogen will boil off first followed by argon and oxygen.
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