Q. 485.0( 1 Vote )
In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each question.
Assertion (A): At critical temperature liquid passes into gaseous state imperceptibly and continuously
Reason (R): The density of liquid and gaseous phase is equal to critical temperature.
(i) Both A and R are true and R is the correct explanation of A.
(ii) Both A and R are true but R is not the correct explanation of A.
(iii) A is true but R is false.
(iv) A is false but R is true
Answer :
(i)
We know that at critical temperature the boundary between the liquid and the gas vanishes and as a result of this removal of liquid –gas boundary, the liquid passes into gaseous state imperceptibly and continuously.
As the reason is true and correct explanation of the assertion.
Hence, (i) is correct option.
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