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Assertion : In pressure-temperature (P-T...

Assertion : In pressure-temperature (P-T) phase diagram of water, the slope of the melting curve is found to be negative.
Reason : Ice contracts on melting to water.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
A
The negative slope is because of change of

phase. This happens to lqiuids which contract on melting.
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An ice which was initially under standard conditions was compressedup to the pressure p = 640 atm . Assuming the lowering of the ice melting temperature to be a linear function of pressure under the given conditions, find what fraction of the ice melted. The specific volume of water is less than of ice by Delta V' = 0.09 cm^3//g .

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