Which of the following gases is useful as an energy fuel?

  • A
    Nitrogen
  • B
    Helium
  • C
    Neon
  • D
    Hydrogen

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Similar Questions

Choose the correct sentence.

Which is the main gas produced in biogas?

Statement $X$: Biogas is used as a fuel for energy.
Statement $Y$: Biogas contains $H_2S$,$CO_2$,and oxygen gas.

Which of the following is responsible for the production of biogas?

Biogas consists of .......

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