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Question

The use of dry wood as a domestic fuel is not considered good. state any two reason for it.


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Solution

Dry wood as a fuel

  1. When dry wood is used as fuel, it is referred to as firewood.
  2. It is used as a domestic fuel for cooking purposes.

Disadvantages of using dry wood as a domestic fuel

  1. Dry wood produces smoke and leaves a large amount of residue after burning.
  2. The calorific value of wood is 17kJ/g which is low. As a result, in order to generate a sufficient amount of heat, one must burn a large amount of wood.
  3. The use of wood as fuel leads to deforestation.
  4. It occupies a large area due to its size and shape. Moreover, its transportation is cumbersome. Hence, it's not compact and convenient.

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