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20. Account for the following . (a) CaCl2 is used to clear snow from roads to hill stations . (b) ethylene glycol is used as antifreeze solution in ratiators of vehicles in
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Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 kg of water to prevent it from freezing at - 6^oC
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