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Standard X
Physics
Biomass and Biogas
Name the clea...
Question
Name the clean fuel which can be obtained from cow-dung.
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Solution
On the decomposition of the organic matter in cow dung, a clean fuel, 'biogas', is obtained.
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Q.
The fuel which is not obtained from biomass is:
(a) firewood
(b) cow-dung cakes
(c) coke
(d) charcoal
Q.
The gas which is obtained from cow dung is called ______.
Q.
What are the two ways in which cow-dung can be used as a fuel? Which of them is better and why?
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.
is a promoter with a combination of five products obtained from the cow, which includes cow dung, cow’s urine, milk, curd and ghee.
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