11. The necessary condition for phase equilibrium in a multiphase system of N components is that the
12. It is desired to bring about a certain change in the state of a system by performing work on the system under adiabatic conditions.
13. Heat of formation of an element in its standard state is
14. Variation of equilibrium pressure with temperature for any two phases of a given substances is given by the __________ equation.
15. For a single component two phase mixture, the number of independent variable properties are
16. For an ideal gas, the internal energy depends upon its __________ only.
17. Enthalpy 'H' is defined as
18. Entropy is a/an
19. Pick out the correct equation relating 'F' and 'A'.
20. Mollier chart is a __________ plot.
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