five difference between coal & LPG ??

It is a solid fuel.It is compressed natural gas, it is in liquid form.
It is obtained from fossilized trees, plants and animals.It is obtained from fractional distillation of crude oil.
It produces smoke and ash due to incomplete combustion.It does not produce smoke due to complete combustion.
The ignition temperature is low.The ignition temperature is high.
The amount of energy liberated is small.The amount of energy liberated is high.

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