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Byju's Answer
Standard XII
Chemistry
Le Chatelier's Principle for Del N Equals to 0
Assertion : T...
Question

Assertion : The melting point of ice decreases with increase of pressure .
Reason: Ice contracts on melting

A
If both assertion and reason are true but the reason is the correct explanation of assertion.
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B
If both assertion and reason are true but the reason is not the correct explanation of assertion.
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C
If assertion is true but reason is false.
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D
If both the assertion and reason are false.
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E
If reason is true but assertion is false.
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Solution

The correct option is A If both assertion and reason are true but the reason is the correct explanation of assertion.
Since ice contracts on melting. When we increase pressure on the ice, it tries to resist this change according to Le-Chatellier's principle. To decrease pressure, volume of ice will be decreased.It can happen if more and more ice melts i.e. its melting point is lowered.


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