The number of correct statements involving equilibria in physical process from the following is (i) Equilibrium is possi…

The number of correct statements involving equilibria in physical process from the following is

(i) Equilibrium is possible only in a closed system at a given temperature.

(ii) Both the opposing processes occur at the same rate.

(iii) When equilibrium is attained at a given temperature, the value of all its parameters became equal.

(iv) For dissolution of solids in liquids, the solubility is constant at a given temperature

[JEE Main 2023, 10 Apr (Shift 1)]