10th Class Science Sources of Energy Question Bank 10th CBSE Science Sources of Energy

  • question_answer
      Why is biogas a better fuel than animal dung cakes?

    Answer:

                      Biogas is a better fuel than animal dung cakes because: (i) Burning of animal dung cake causes lot of pollution whereas biogas is a smokeless fuel. (ii) The calorific value of animal dung cake is much lower than that of biogas. (iii) Animal dung cakes leave residue after burning whereas biogas leaves no residue.


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