Question:
Although wood has a very high calorific value, we still discourage its use as a fuel. Explain.
Solution:
Burning of wood has several disadvantages. These are as follows:
(i) Burning of wood produces a lot of smoke which causes respiratory diseases.
(ii) The cutting down of trees to obtain as a wood fuel leads to deforestation which is very harmful to the environment.
(iii) Trees provide us many-useful substances. To obtain fuel wood, when trees are cut down, then all useful substances which can be obtained
from trees are lost.
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