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M

Mr. Dubey • 100.64K Points
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Q. The percentage of krypton in atmospheric air is around

  • (A) 0.01 ppm
  • (B) 0.1 ppm
  • (C) 1 ppm
  • (D) 10 ppm
  • Correct Answer - Option(C)
  • Views: 464
  • Filed under category Environmental Engineering
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