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Question

Q. Arrange the following gases in decreasing order of their composition in the atmosphere.

Choose the correct option:


A
3-2-1
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B
3-1-2
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C
1-2-3
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D
1-3-2
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Solution

The correct option is D 1-3-2
Explanation:
Gases Percentage
Nitrogen (N2) 78.08%
Oxygen (O2) 20.95%
Argon (Ar) 0.93%
Carbon Dioxide (CO2) 0.04%
Neon (Ne) 0.0018%
Helium (He) 0.0005%

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