How does sprinkling of salt help in clearing

Question:

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

Solution:

Salt is a de-icing agent and can be used to melt ice. If the freezing point is lowered the ice starts melting. So the addition of salt to snow reduces the freezing point from O℃ to lower.

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