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Assertion (A) Gases do not liquefy above...

Assertion (A) Gases do not liquefy above their critical temperature, even on applying high pressure.
Reason (R) Above critical temperature, the molecular speed is high and intermolecular attractions cannot hold the molecules together because they escape because of high speed.

A

A and R both are correct, and R is correct explanation of A.

B

A and R both are correct, but R is not correct explanation of A.

C

A is true but R is false.

D

A is false but R is true.

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • Assertion : All the gases should be cooled below their critical temperature for liquification . Reason : Cooling slows down the movement of molecules therefore , intermolecular forces may hold the slowly moving molecules together and the gas liquifies .

    A
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    B
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    If both assertion and reason are correct and reason is correct explanation for assertion
    B
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    C
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    A
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    B
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