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Uses of CO2

Why is biogas...

Question

Why is biogas a better fuel than animal dung cake? [2 MARKS]

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Solution

Each point: 1 Mark

1. Biogas is a better fuel compared to animal dung cakes because of the amount of energy released per unit mass.
2. Also, biogas releases less smoke than the animal dung cakes.

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Q. Mention any two ways in which cow dung can be utilised as a fuel. Out of two which is better? Justify. (2 marks)
Ans. Cow dung can be used by burning cowdung itself or by burning biogas produced from it. Biogas is more efficient as it's thermal efficiency is higher than that of cow dung. It doesnt contain moisture while cow dung has a lot.
(I got only 1 out of 2 marks)
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Q. A gaseous fuel called Biogas can be produced by using dead plants, kitchen waste, and animal dung.

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