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STD 12 - 8. microbes in human welfare — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 8. microbes in human welfare1 Mark
MCQ
Biogas contains
  • A
    $30\;\% -40\;\%$ $Methane$
  • B
    $50\;\% -70\;\% CO_2$
  • ✓
    $50\;\% -70\;\%$ $Methane$
  • D
    $20\;\%$ $Methane$
✓

Answer

Correct option: C.
$50\;\% -70\;\%$ $Methane$
c
Biogas contains
$CH_4 -50-70\;\%$
$CO_2 -30-40\;\%$
$H_2, H_2S etc -10\;\%$

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