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Microbes in Human Welfare — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYMicrobes in Human Welfare1 Mark
MCQ
Biogas contains :
  • A
    $CO _2$
  • B
    $H _2 S$
  • C
    $CH _4$
  • ✓
    All of these
✓

Answer

Correct option: D.
All of these
D

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