A) Oxygen, carbon dioxide, nitrogen, hydrogen
B) Carbon dioxide, oxygen, nitrogen, hydrogen
C) Hydrogen, nitrogen, carbon dioxide, oxygen
D) Nitrogen, oxygen, carbon dioxide, hydrogen
Correct Answer: D
Solution :
The correct percentage of gases by volume present in the atmosphere is nitrogen (78.03%), oxygen (20.99%), argon (6.93%), carbon dioxide (0.03%), hydrogen (0.01%), neon (0.0018%), helium (0.005%), krypton (0.000009%) and ozone (0.000001%)
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