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Question
Give four reasons, why the use of cowdung in biogas preferred to burning of cowdung cakes.
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Solution
Use of cow-dung in biogas is preferred to burning of cow-dung cakes because:
- Biogas does not produce any smoke and hence causes no pollution.
- Biogas leaves behind no ash on burning.
- Calorific value of biogas is very high as compared to cow-dung cakes.
- Biogas can be used for driving engines of tube wells while cow-dung cakes can not be used for this purpose.
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