Why is water used to cool the radiators of engines?

Of its lower density

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It is easily available

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It is cheap

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It has high specific heat

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Solution

The correct option is D
It has high specific heat

Due to the large specific heat of water, it releases large heat with very small change in temperature. It takes a tremendous amount of energy to change the temperature of water, giving it enormous cooling capacity compared to most metals (rapidly absorbing heat energy from the engine).

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Water is used to cool radiators of engines because it has a high specific heat capacity.

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