Assertion (A): Gases do not liquefy above

Assertion (A): Gases do not liquefy above their critical temperature, even

on applying high pressure.

Reason (R): Above the 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.