Assertion (A): At critical temperature,the su | vedclass

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(A) The critical temperature is defined as the temperature at which the distinction between the liquid and gas phases disappears,and the surface tensi

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Both $A$ and $R$ are true and $R$ is a correct explanation for $A$.

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(A) The critical temperature is defined as the temperature at which the distinction between the liquid and gas phases disappears,and the surface tension of the liquid becomes zero. Thus,Assertion $(A)$ is true.At the critical temperature,the density of the liquid and the gas phases become identical,and the intermolecular forces between the molecules in the liquid phase effectively vanish or become indistinguishable from those in the gas phase. This loss of cohesive force leads to the disappearance of surface tension. Therefore,Reason $(R)$ is true and provides the correct explanation for Assertion $(A)$.

Assertion $(A)$: At critical temperature,the surface tension of liquids becomes zero.
Reason $(R)$: At critical temperature,the intermolecular forces for liquids and gases become equal.

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Assertion $(A)$: At critical temperature,the surface tension of liquids becomes zero.Reason $(R)$: At critical temperature,the intermolecular forces for liquids and gases become equal.