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The mixture of hydrogen, methane, and carbon monoxide is called:

Question: The mixture of hydrogen, methane, and carbon monoxide is called:
  • A. Coal gas ✓
  • B. CNG
  • C. Biogas
  • D. Natural gas
Correct Answer: A. Coal gas
Explanation: Coal gas is a mixture of hydrogen, methane, and carbon monoxide used historically as a fuel.

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