Question
How can you burn wood or coal using kerosene oil ?

Answer

We have to use kerosene oil to start fire in wood or coal. It is because coal has high ignition temperature. A burning matchstick cannot produce sufficient heat to reach the ignition temperature of coal. Since, ignition temperature of kerosene oil is low, so if some kerosene is sprinkled over the wood, the kerosene starts burning by a lighted matchstick.
The heat produced by the burning of kerosene makes the wood to burn. The coal pieces are then placed over the burning wood. The large heat produced by the burning wood heats the coal to its ignition temperature. In this way, the coal starts burning.

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