Question

why is water not used to extinguish fire due to oil

Answer 1

Answer- Water is not used to extinguish fire.
Reason: Water is not used to extinguish fires involving oil because water has more density than oil i.e. water is heavier than oil. So, it will sink down and oil will float above. When oil will form a layer above water, oil keeps on conducting fire.
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Answer 2

Answer:

Petroleum products and oils have lesser density and float on water. The fire will keep burning and even get worse. So in such cases too, fire extinguishers are the best options to extinguish the fire.

Explanation: