Which of the following statements is correct?

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Water is the best extinguisher for fires involving petrol and kerosene.

Water is used for extinguishing fires caused by oil.

Fires caused by short-circuiting should be put off by water.

Carbon dioxide is used to extinguish fires involving oil and petrol.

answer is D.

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Detailed Solution

The correct statement is - Carbon dioxide is used to extinguish fires involving oil and petrol.

Water is heavier than oil and petrol and sinks below them, and oil and petrol keep burning on top. Water is a good conductor of electricity. If it is used to extinguish the fire caused by short-circuiting then water may conduct electricity and harm those trying to douse the fire. For fires involving electrical equipment and inflammable materials like petrol, carbon dioxide (CO₂₎ is the best extinguisher.

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