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CSS Solved Papers
Physics Chemistry

Engineering :: Environmental Engineering

  Arrange the following in ascending order of their occurrence in the atmosphere: (1) oxygen (2) Nitrogen (3) Carbon dioxide (4) Argon
[A]. Nitrogen Oxygen Carbon dioxide Argon[B]. Argon Carbon dioxide Oxygen Nitrogen
[C]. Carbon dioxide Argon Oxygen Nitrogen [D]. Nitrogen Oxygen Argon Carbon dioxide

Answer: Option C
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