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Vishal Gupta • 7.73K Points
Tutor III Science

Q. Which one of the following is associated With the formation of brown air in traffic congested cities?

  • (A) Sulphur dioxide
  • (B) Nitrogen oxide
  • (C) Carbon dioxide
  • (D) Carbon monoxide
  • Correct Answer - Option(B)
  • Views: 167
  • Filed under category Science

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