Question
Explain, why is water used as a coolent in motor car radiators?
✓
Answer
Water has the highest specific heat capacity of $4.2 Jg^{-1}^\circ C^{-1}$ and its temperature does not rise beyond $100^\circ C$. Thus, it can absorb large amount of heat from the working engine, which is then radiated out through radiator Thus, on low temperature the engine works efficiently.
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