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Firewood is a conventional fuel. Ling any four reasons for replacing it with alternate sources of energy. |
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Answer» Solution :(i) Wood has calorific value as COMPARED to other SOURCES of fuel. (II) It causes air POLLUTION on burning. (iii) Cutting down of trees causes depletion of forest leading to imbalance in nature. (iv) Only 8-10% energy of burning firewood utilised and the remaining is wasted. |
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