MCQ
बायोगैस में मिश्रित गैसों का नाम
  • A
    $CH _4, H _2 S, CO _2, CO$
  • B
    $CH _4, H _2 S, CO _2$
  • C
    $CH _4, CO _2$
  • D
    $CO , CH _4 ; H _2 S$

Answer

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