Gujarat BoardEnglish MediumSTD 8ScienceCombustion and Flame4 Marks
Question
Compare $LPG$ and wood as fuels.
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Answer
Wood has been a traditional fuel for both domestic and industrial use. However, it produces a lot of smoke that can cause respiratory problems. Also, wood is obtained from trees. Thus, using wood as a fuel causes deforestation. Therefore, slowly wood is replaced by $LPG$, which is a liquefied form of petroleum gas. It does not give out smoke and other pollutants and is a cleaner fuel. Again, fuel efficiency of $LPG$ is more than that of wood.
The calorific value of $LPG$ is 55000 kJ/kg, while that of wood is between $17000$ to $22000 kJ/kg$.
Hence, $LPG$ is favoured over wood.
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