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AP EAMCET2010ChemistryEnvironmental Chemistry

The acceptable level of carbon monoxide gas (CO) in the atmosphere in ppm level is

Options

  1. A9
  2. B250
  3. C49
  4. D850

Correct answer

A. 9

Step-by-step solution

The acceptable level of carbon monoxide gas (CO) in the atmosphere is 9 ppm .

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