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G

Geetam • 6.04K Points
Tutor III

Q. For comfortable working, the ___________ content should be limited to about 0.6% by volume.

  • (A) Oxygen
  • (B) Hydrogen
  • (C) Carbon monoxide
  • (D) Carbon dioxide
  • Correct Answer - Option(D)
  • Views: 981
  • Filed under category Building Services
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