In the following questions, a statement of Assertion (A) followed by a statement of the 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.

Answers (1)

The answer is the optio (i) Both A and R are true, and R is the correct explanation of A.

Explanation: Density of liquid becomes equal to its vapour phase at a critical temperature which causes the liquid to change into gaseous state imperceptibly and continuously.

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