Which of the fuel gases has composition by volume 34% CH4 + 48% H2 + 1

1.	Which of the fuel gases has composition by volume 34% CH₄ + 48% H₂ + 15% O₂ + 3% CO
A.	Oil gas
B.	Petrol gas
C.	Coal gas
D.	Water gas
Answer» D. Water gas

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