Ncert Exercises & Solutions

Given below are two statements:

Assertion (A):	At the critical temperature, the liquid passes into a gaseous state imperceptible and continuously.
Reason (R):	The density of the liquid and gaseous phase is equal to critical temperature.

1.	Both (A) and (R) are true and (R) is the correct explanation of (A).
2.	Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.	(A) is true but (R) is false.
4.	(A) is false but (R) is true.

Hint: The critical temperature of a substance can be defined as the highest temperature at which the substance can exist as a liquid.

At the critical temperature, the density of the liquid and gaseous phase becomes equal. Due to which liquid passes into gaseous state imperceptibly and continuously.

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