Internal energy change of a system over one complete cycle in a cyclic process is

A. Zero

B. +ve

C. -ve

D. Dependent on the path

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  1. For an ideal solution, the value of activity co-efficient is
  2. Pick out the wrong statement.
  3. For a spontaneous process, free energy
  4. A system is said to be at equilibrium, if the entropy of the system has reached __________ value.
  5. What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at…
  6. Which of the following is a thermodynamic property of a system?
  7. Which of the following processes cannot be made reversible even under ideal condition of operation?
  8. At normal boiling point, molar entropy of vaporisation is __________ Joule/K°.mole.
  9. A solid is transformed into vapour without going to the liquid phase at
  10. Pick out the Clausius-Clapeyron equation from the following:
  11. Helmholtz free energy (A) is defined as
  12. In a homogeneous solution, the fugacity of a component depends upon the
  13. Compressibility factor for almost all the gases are approximately same at the same
  14. A Carnot cycle consists of the following steps:
  15. The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called…
  16. What happens in a reversible adiabatic expansion process?
  17. In case of a close thermodynamic system, there is __________ across the boundaries.
  18. Specific volume of an ideal gas is
  19. Steam undergoes isentropic expansion in a turbine from 5000 kPa and 400°C (entropy = 6.65 kJ/kg…
  20. Which is not constant for an ideal gas?
  21. Clausius-Clapeyron Equation gives accurate result, when the
  22. Gibbs free energy of mixing at constant pressure and temperature is always
  23. Degree of freedom of the system ice-watervapour will be
  24. In case of the decomposition of hydroiodic acid (2HI H2 + I2), addition of H2 (at equilibrium condition)…
  25. The variation of heat of reaction with temperature at constant pressure is given by the __________ law.
  26. One ton of refrigeration is defined as the heat rate corresponding to melting of one ton of ice in one
  27. Law of corresponding states says that
  28. The partial molar enthalpy of a component in an ideal binary gas mixture of composition Z, at a temperature…
  29. 1m3 of an ideal gas at 500 K and 1000 kPa expands reversibly to 5 times its initial volume in an insulated…
  30. Gibbs phase rule finds application, when heat transfer occurs by