A

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Q. Arrange the following gases present in atmosphere in the decreasing order of volume :
I. Helium
II. Oxygen
III. Nitrogen
IV. Argon

  • (A) (I), (III), (III), (IV)
  • (B) (II), (III), (IV), (I)
  • (C) (III), (II), (IV), (I)
  • (D) (IV), (III), (I), (II)
  • Correct Answer - Option(C)
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Explanation by: Admin
III. Nitrogen (78.08%)
II. Oxygen (20.95%)
IV. Argon (0.93%)
I. Helium (0.0005%)

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