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Hydrogen may not be advantagous as a fuel because——-

  • A

    It has unlimited quantities in the sea

  • B

    It is pollution free

  • C

    It can be stored and used when needed

  • D

    it is a secondary source of energy

it is a secondary source of energy Is the correct option, Check your your study materials for clarification. In responding to the question with the right answer : Hydrogen may not be advantagous as a fuel because-------(looking at your study materia, the answer is) it is a secondary source of energy