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Chemical Engineering :: Chemical Engineering Thermodynamics

  1. With increase in temperature, the internal energy of a substance

  2. A.

     Increases

    B.

     Decreases

    C.

     Remains unchanged

    D.

     May increase or decrease; depends on the substance


  3. y = specific heat ratio of an ideal gas is equal to

  4. A.

     Cp/Cv

    B.

     Cp/(CP-R)

    C.

     1 + (R/CV)

    D.

     All of the above


  5. The standard Gibbs free energy change of a reaction depends on the equilibrium

  6. A.

     Pressure

    B.

     Temperature

    C.

     Composition

    D.

     All of the above


  7. In the ammonia synthesis reaction, N₂ + 3H₂ ⇋ 2NH₃ + 22.4 kcal, the formation of NH₃ will be favoured by

  8. A.

     High temperature

    B.

     Low pressure

    C.

     Low temperature only

    D.

     Both low temperature and high pressure


  9. A liquid under pressure greater than its vapour pressure for the temperature involved is called a __________ liquid.

  10. A.

     Subcooled

    B.

     Saturated

    C.

     Non-solidifiable

    D.

     None of these


  11. Vapour which is at a pressure smaller than the saturation pressure for the temperature involved is called a __________ vapour.

  12. A.

     Superheated

    B.

     Desuperheated

    C.

     Non-condensable

    D.

     None of these


  13. The expression, nRT In P₁/P₂ , is for the____of an ideal gas.

  14. A.

     Compressibility

    B.

     Work done under adiabatic contition

    C.

     Work done under isothermal condition

    D.

     Co-efficient of thermal expansion


  15. Which of the following is not an intensive property?

  16. A.

     Chemical potential

    B.

     Surface tension

    C.

     Heat capacity

    D.

     None of these


  17. In a reversible process

  18. A.

     Tds = dE + dW

    B.

     DE - dW = Tds

    C.

     DW - dE = Tds

    D.

     Tds - dW + dE >0


  19. Which of the following is not an intensive property?

  20. A.

     Molar heat capacity

    B.

     Internal energy

    C.

     Viscosity

    D.

     None of these