formation of biogas from cow dung is slow or fast change, reversible or Irreversible change physical or chemical change
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26
Answer:
It is a slow , irreversible and chemical change
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9
Explanation:
Reversible changes can be fixed or turned around. At an initial stage when you can get back the substances as a response and this is called reversible response. Instances of reversible responses incorporate dissolving, vanishing, liquefying and solidifying. Solidifying is a reversible change. Therefore it is right answer and get an ideas of following at the time of the reading it.
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