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CBSE Class 10 Answered

Hidrogen is combustible, oxygen helps in combustion , so when we add water in fire blow of????
Asked by Vishnu Yadav | 11 Nov, 2013, 10:51: AM
answered-by-expert Expert Answer

Water is a compound of hydrogen and oxygen which contains the two elements chemically combined in a fixed proportion by mass.

Because it is a compound, its properties are very different from that of the combining elements (hydrogen and oxygen).

Water cools the combustible material so that its temperature is brought below its ignition temperature. This prevents the fire from spreading.

Water vapours also surround the combustible material, helping in cutting off the supply of air. So, the fire is extinguished.

Answered by Hanisha Vyas | 11 Nov, 2013, 11:40: AM
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