Gujarat BoardEnglish MediumSTD 11 SciencePhysics10.1, thermonetry,thermal expansion and calorimetry1 Mark
MCQ
Fire is extinguished more effectively by
✓
Hot water
B
Cold water
C
Equally by both
D
Ice
✓
Answer
Correct option: A.
Hot water
a (a) Fire is extinguished by the vaporisation do water which lowers the temperature of the burning body. Further, the water vapour envelops the body, keeping oxygen away. Hot water evaporates more than cold water as
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