Q. Which one of the following is not a constituent of biogas?

  • (A) Methane
  • (B) Carbon dioxide
  • (C) Hydrogen
  • (D) Nitrogen dioxide
✅ Correct Answer: (D) Nitrogen dioxide

Published by Priyanka Tomar ⭐ 35.28K Points at 25-Sep-2020 03:40 pm in Science

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