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Surface Tension

Ice skating c...

Question

Ice skating can be used to demonstrate that when ice is under pressure, its:

A

Melting point remains unchanged

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B

Melting point is raised

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C

Melting point is lowered

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D

Coefficient of friction with metal is reduced

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Solution

The correct option is C Melting point is lowered
The skaters slide more easily on ice than other smooth surfaces because ice melts under the pressure exerted by the skates to produce a thin film of water. hence, it is true that an increase in pressure will result in decreasing the melting point.

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