Question

Arrange the following in the decreasing order of their composition in the atmosphere.
Oxygen, Argon, Nitrogen, and Carbon dioxide.

• A. Nitrogen < Oxygen < Argon < Carbon Dioxide
• B. Nitrogen < Oxygen < Carbon Dioxide < Argon
• C. Oxygen < Nitrogen < Carbon Dioxide < Argon
• D. Oxygen < Carbon Dioxide < Nitrogen < Argon

Answer 1

The correct option is A Nitrogen < Oxygen < Argon < Carbon Dioxide

Air is a mixture of several gases. Nitrogen is the major component of air.
The composition of air is:
Nitrogen -78%
Oxygen -20.9%
Argon -0.90%
Carbon Dioxide -0.03%
Other gases -0.17%