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CDS I 2018 GK Q41

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1. Consider the following constituent gases of the atmosphere: 1. Argon 2. Neon 3. Helium 4. Carbon dioxide. Which one of the following is the correct sequence of the above gases in terms of the volume percentage?

1-3-2-4

1-4-2-3

4-2-3-1

2-4-1-3

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CDS I 2018 GK Q41

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