A system is said to be isopiestic, if there is no ______________ change?

Related Mcqs:

1. “When a system in equilibrium is subjected to a change in temperature, pressure or concentration, the equilibrium is displaced in a direction which tends to undo the effect of the change.” This is called the_______________?

   A. Le-Chatelier principle
   B. Kopp’s rule
   C. Law of corresponding state
   D. Arrhenius hypothesis

2. Specific ____________ does not change during a phase change (e.g. sublimation, melting, vaporisation etc.)?

   A. Entropy
   B. Internal energy
   C. Enthalpy
   D. Gibbs free energy

3. High pressure steam is expanded adiabatically and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process ?

   A. Δ H = 0 and ΔS = 0
   B. Δ H ≠ 0 and ΔS = 0
   C. Δ H ≠ 0 and ΔS ≠ 0
   D. Δ H = 0 and ΔS ≠ 0

4. Specific _____________ does not change during phase change at constant temperature and pressure?

   A. Entropy
   B. Gibbs energy
   C. Internal energy
   D. Enthalpy

5. Those solutions in which there is no volume change upon mixing the components in the liquid state and which, when diluted do not undergo any heat change (i.e. heat of dilution is zero), are called ____________ solutions?

   A. Ideal
   B. Real
   C. Isotonic
   D. None of these

6. There is a change in ______________ during the phase transition?

   A. Volume
   B. Pressure
   C. Temperature
   D. All a, b & c

7. The gas law (PV = RT) is true for an ______________ change?

   A. Isothermal
   B. Adiabatic
   C. Both A. & B
   D. Neither A. nor B

8. “If different processes are used to bring about the same chemical reaction, the enthalpy change is same for all of them”. This is ______________ law?

   A. Hess’s
   B. Kirchoff’s
   C. Lavoisier and Laplace
   D. None of these

9. Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ______________ with the increase of reduced temperature?

   A. Decreases
   B. Increases
   C. Remains constant
   D. Decreases logarithmically

10. The work done in an adiabatic change in a particular gas depends upon changes in the ______________ only?

    A. Temperature
    B. Specific heat
    C. Volume
    D. Pressure