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Comparison between wood and LPG
Wood has been used as a domestic
and industrial fuel for centuries. In
many rural parts of our country, people
still use wood as a fuel due to its low
cost and easy availability. The burning
of wood as a fuel has, however, many
disadvantages. Some of the
disadvantages of burning wood as fuel are as follows.

1. The burning of wood produces a lot of smoke which is very harmful to human
beings. Soke causes respiratory diseases.
2. The tree provides us with many useful substances. When trees are cut down to
obtain wood for use as fuel, then all the useful substances which can be obtained
from trees are lost.
3. Wood has now been replaced by coal and other fuels such as LPG (Liquified
Petroleum Gas).

LPG is a better domestic fuel than wood for the following reasons.

1. LPG has a much higher calorific value than wood, so it produces much
more heat on burning than an equal mass of wood.
2. LPG burns without producing any smoke but the burning of wood
produces a lot of smoke.
3. LPG burns completely without leaving behind any solid residue but
wood leaves behind a lot of ash on burning.