Question

Above the critical pressure, a substance is a(n) _____ fluid.

a. isocritical
b. subcritical
c. supercritical
d. hypercritical

Answer 1

Dunno why the answer above has been reported, but they're correct, the answer is C.

Answer 2

The correct answer among the choices given is option C. Above the critical pressure, a substance is a supercritical fluid. This fluid is any substance at a temperature and pressure above the critical point here the phases of the liquid and the gas do not exist.