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Q. The pH of fresh groundwater slightly decreases upon exposure to air because

  • (A) carbon dioxide from air dissolved in the water.
  • (B) oxygen from the air is dissolved in the water
  • (C) the dissolved carbon dioxide of the groundwater escapes into air.
  • (D) the dissolved oxygen of the groundwater escapes into air.
  • Correct Answer - Option(A)
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  • Filed under category Chemistry
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