Biogas is a better fuel than animal dung cake because
(a) biogas has lower calorific value.
(b) animal dung cake has high calorific value
(c) biogas bums smoke and leaves no residue
(d) biogas is used as a fuel for cooking only wheareas dung cake can be used for cooking, illuminant the lanterns.
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Biogas is a better fuel than animal dung cakes because: Burning of animal dung cake causes lot of pollution whereas biogas is a smokeless fuel. The calorific value of animal dung cake is much lower than that of biogas. Animal dung cakes leave residue after burning whereas biogas leaves no residue
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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 residues.
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