Question

Fire produced by
and
cannot be controlled by
water."​

Answer 1

Explanation:

Water cannot put off fire produced due to burning petrol and oil because water is heavier than oil. It settles down or sinks below the oil particles and cannot bring the ignition temperature of the substance down or cannot cut off the supply of air to the fire. Hence, oil keeps on burning on the top.

Answer 2

Water cannot put off fire produced due to burning petrol and oil because water is heavier than oil. It settles down or sinks below the oil particles and cannot bring the ignition temperature of the substance down or cannot cut off the supply of air to the fire.

Water cannot be used if electrical equipment is on fire because it can conduct electricity and cause harm. It is also not suitable to use water to extinguish fires involving inflammable materials like oil and petrol because water is heavier than oil and sinks below it.

Water puts out fire by creating a barrier between the fuel source and the oxygen source (it also has a cooling effect which has to do with the energy required to convert liquid water into water vapor). ... Since grease floats on water, the water cannot block the fuel (grease) from the oxidizer (air).

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