GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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With an increase in pressure the melting point of max will
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Increase
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Decrease
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Remain Unaffected
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First increase and then decrease
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Explanation:
Detailed explanation-1: -The melting point of most of the solid substances increases with an increase in pressure. However ice melts at a temperature lower than its usual melting points when pressure is increased.
Detailed explanation-2: -The stronger the intermolecular forces are, the more energy is required, so the higher the melting point is. Many intermolecular forces depend on how strongly atoms in the molecule attract electrons-or their electronegativity.
Detailed explanation-3: -The greater the pressure, the more energy required for liquids to boil, and the higher the boiling point. In an open system this can be visualized as air molecules colliding with the surface of the liquid and creating pressure.
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