Pick out the wrong statement ?

Thermodynamics for Chemical 27/02/2021

A. Minimum number of degree of freedom of a system is zero
B. Degree of freedom of a system containing a gaseous mixture of helium, carbon dioxide and
hydrogen is 4
C. For a two phase system in equilibrium made up of four non-reacting chemical species, the
number of degrees of freedom is 4
D. Enthalpy and internal energy change is zero during phase change processes like melting,
vaporisation and sublimation

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