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How does sprinkling of salt help in clea...

How does sprinkling of salt help in clearing the snow - convered roads in hilly areas ? Explain the phenomenon involved in the process.

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The phenomenon involved in clearing the snow - covered roads in hilly areas is .Depression in freezing point of water when a non - volatile solute is dissolved in it.. Thus when salt is spread over snow covered roads, snow starts melting from the surface because of the depression in freezing point of water and it helps in clearing the roads.
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