Question

Which of the following is not a biofuel?
ethanol
natural gas
butanol
methanol
​

Answer 1

Explanation:

natural gas

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Answer 2

Explanation:

Methanol can be produced from natural gas, coal and renewable sources such as municipal waste, biomass and recycled carbon dioxide. Methanol – CH3OH – is four parts hydrogen, one part oxygen

on the otherhand, ethanol is less chemically toxic than methanol, and it carries more energy per gallon. Ethanol contains about 75 percent of the energy of gasoline per gallon, compared to 67 percent for methanol. A fuel system made acceptable for methanol use will also be fine for ethanol or pure gasoline. ...