Discussion Forum : Air Around Us
Question -


Arrange the following gases in ascending order of their percentages in the air.

Options:
A .   Oxygen < Nitrogen < Hydrogen
B .   Nitrogen < Hydrogen < Oxygen
C .   Nitrogen < Oxygen < Hydrogen
D .   Hydrogen < Oxygen < Nitrogen
Answer: Option D
:
D
The correct ascending order of percentages of the gases as per the composition of air is: hydrogen and other gases - 1%, oxygen - 21% and nitrogen - 78%.

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