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Ram Sharma • 193.86K Points
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Q. In upper layer of atmosphere ozone is formed by

  • (A) the action of ultraviolet rays on oxygen
  • (B) the combination of oxygen molecules
  • (C) subjecting oxygen to high pressure
  • (D) the action of nitrogen on oxygen in atmosphere
  • Correct Answer - Option(A)
  • Views: 355
  • Filed under category Chemistry

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