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You know that as we go higher than the s...

You know that as we go higher than the sea level, the boiling point of water decreases. What would be the effect on the melting point of solid?

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As we go higher than the sea level, the melting point of solids ( i) that expand on melting is lowered due to a decreases in pressure (ii) that contract on melting is raised due to a decrease in pressure.
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