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Carbon: An Important Element — Science STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9ScienceCarbon: An Important Element3 Marks
Question
Give the occurrence of methane.
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Answer

  • Methane occurs in natural gas to the extent of 87%.
  • Decomposition of organic matter in the absence of air (anaerobic) produces methane.
  • Methane is present in biogas.
  • Methane is found in coal mines.
  • Methane is found at the surface of marshy places which is why it is also called marsh gas.
  • On heating a mixture of hydrogen and carbon monoxide gases at 300 °C in the presence of nickel (catalyst), methane gas is formed.
  • Fractional distillation of natural gas gives methane in pure form.

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