A liquid used as a coolant in automobile engine is
A
alcohol
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B
engine oil
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C
water
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D
benzene
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Solution
The correct option is C water Radiators are heat exchangers used for cooling internal combustion engines, mainly in automobiles. Internal combustion engines are often cooled by circulating a liquid called engine coolant through the engine block, where it is heated, then through a radiator where it loses heat to the atmosphere, and then returned to the engine. Engine coolant is usually water-based.