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Question
Why is biogas a better fuel than animal dung cakes?
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Solution
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.
(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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