Civil Engineering MCQs
Q Which one of the following gases is most significant as air pollutant ?
  • A A. Carbondioxide
  • B B. Oxygen
  • C C. Nitrogen
  • D D. Sulphur-dioxide
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Word of the Day
26 Jul
Simultaneously
at the same time.
ایک ہی ΩˆΩ‚Ψͺ Ω…ΫŒΪΊΨŒ ایک Ψ³Ψ§Ψͺھ، بیک ΩˆΩ‚Ψͺ

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