The amount of carbon dioxide in the atmosphere is ____________.

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RRB Group D 8 Sept 2022 Shift 2 Official Paper
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  1. 0.3% 
  2. 0.03% 
  3. 71% 
  4. 21% 

Answer (Detailed Solution Below)

Option 2 : 0.03% 
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Detailed Solution

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The correct answer is '0.03%'.

Key Points

  • Only 0.03% of carbon dioxide is present in the atmosphere.
  • Carbon dioxide concentration is rising day by day due to global warming.
  • Carbon dioxide comes mostly by burning fossil fuels or clearing forest land.
  • About a quarter of COis taken up by the ocean and another quarter is absorbed by plants. Rest is persistently present in the atmosphere.

Important Points

The atmospheric composition of gases by volume are as follow: 

Permanent Gases of the Atmosphere

Constituent

Percent by Volume

Nitrogen (N2)

78.084

Oxygen (O2)

20.946

Argon (Ar)

0.934

Carbon dioxide (CO2)

0.036

Neon (Ne)

0.00182

Helium (He)

0.000524

Krypton (Kr)

0.000114

Hydrogen (H2)

0.00005

 
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