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  1. (∂E/∂T)V is the mathematical expression for

  2. A.

     CV

    B.

     Enthalpy change

    C.

     Free energy change

    D.

     None of these


  3. (∂H/∂T)p is the mathematical expression for

  4. A.

     CV

    B.

     Entropy change

    C.

     Gibbs free energy

    D.

     None of these


  5. (∂T/∂P)H is the mathematical expression for

  6. A.

     Specific heat at constant pressure (Cp)

    B.

     Specific heat at constant volume (Cv)

    C.

     Joule-Thompson co-efficient

    D.

     None of these


  7. A refrigeration cycle is the same as a __________ cycle,

  8. A.

     Turbine

    B.

     Heat engine

    C.

     Reversed heat engine

    D.

     None of these


  9. Heat of reaction is

  10. A.

     Dependent on pressure only

    B.

     Dependent on temperature only

    C.

     Dependent on both pressure and temperature

    D.

     Independent of temperature changes


  11. Pick out the correct statement.

  12. A.

     Entropy and enthalpy are path functions

    B.

     In a closed system, the energy can be exchanged with the surrounding, while. matter can not be exchanged

    C.

     All the natural processes are reversible in nature

    D.

     Work is a state function


  13. Pick out the wrong statement.

  14. A.

     The values of (∂P/∂V)T and (∂²P/∂V²)T are zero for a real gas at its critical point

    B.

     Heat transferred is equal to the change in the enthalpy of the system, for a constant pressure, non-flow, mechanically reversible process

    C.

     Thermal efficiency of a Carnot engine depends upon the properties of the working fluid besides the source & sink temperatures

    D.

     During a reversible adiabatic process, the entropy of a substance remains constant


  15. Heat pump

  16. A.

     Accomplishes only space heating in winter

    B.

     Accomplishes only space cooling in summer

    C.

     Accomplishes both A and B

    D.

     Works on Carnot cycle


  17. A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0°C, 760 mm Hg) will be __________ litres.

  18. A.

     448

    B.

     224

    C.

     22.4

    D.

     Data insufficient; can't be computed


  19. Which of the following liquid metals has the highest thermal conductivity?

  20. A.

     Molten sodium

    B.

     Molten lead

    C.

     Mercury

    D.

     Molten potassium