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): 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.
(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 option (i)Both A and R are true, and R is the correct explanation of A.

Explanation: Gases do not liquefy even on applying high pressure if they are above the critical temperature as the Intermolecular forces of attraction cannot hold the molecules together, and the molecular speed is also high.

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