For an ideal solution, the correct option is: A) ΔmixS=0 at constant T and P B) ΔmixV≠0 at correct T and P C) ΔmixH=0 at constant T and P D) ΔmixG=0 at constant T and P

Correct option is C. ΔmixH=0 at constant T and P
The solutions which obey Raoult’s law over the entire range of concentration are known as ideal solutions. The ideal solutions have two other important properties. The enthalpy of mixing of the pure components to form the solution is zero and the volume of mixing is also zero, i.e.,
For ideal solution, ΔmixH=0 ΔmixV=0