Answer :

Spraying water on an oil fire is not a good way of putting out the fire because oil being lighter than water will float on it and continues to burn. It can be very dangerous because water can flow out quickly carrying the burning oil which can be disastrous. Similarly, water should not be used on fires caused by electrical appliances because water is a good conductor of electricity and the person spraying water on the fire can get an electric shock which can be fatal. In case of an oil fire or an electrical fire, fire extinguisher works best. It is effective and safe to use.

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