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Question

......... used as a coolant in the radiators of motor car engines?

A
Mercury
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B
Lava
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C
Water
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D
All the above
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Solution

The correct option is C Water
Water is used as a coolant in the radiators of motor car engines as it has the highest specific heat capacity of 4.2 J/g°C. Thus it can absorb a large amount of excess heat energy produced by the automobile engines, but itself does not rise to a very high temperature.

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