The equation Tds = dE – PdV applies to___________________?

Related Mcqs:

1. The equation DU = Tds – PdV is applicable to infinitesimal changes occuring in_________________?

   A. An open system of constant composition
   B. A closed system of constant composition
   C. An open system with changes in composition
   D. A closed system with changes in composition

2. Clausius Clapeyron equation applies to the _____________ process?

   A. Sublimation
   B. Melting
   C. Vaporisation
   D. All A., B. & C.

3. The equation relating E, P, V and T which is true for all substances under all conditions is given by (∂E/∂V)T = T(∂P/∂T)H – P. This equation is called the ___________________?

   A. Maxwell’s equation
   B. Thermodynamic equation of state
   C. Equation of state
   D. Redlich-Kwong equation of state

4. The equation, (d loge PA/d loge xA) = (d loge PA/d loge xB) applicable to a binary solution of components. A and B in equilibrium with their vapors at constant temperature and pressure is called the _____________ equation?

   A. Van Laar
   B. Margules
   C. Gibbs-Duhem
   D. Gibbs-Duhem-Margules

5. To obtain integrated form of Clausius-Clapeyron equation, ln (P2/P1) = (ΔHV/R) (1/T1 – 1/T2) from the exact Clapeyron equation, it is assumed that the____________________?

   A. Volume of the liquid phase is negligible compared to that of vapour phase
   B. Vapour phase behaves as an ideal gas
   C. Heat of vaporisation is independent of temperature
   D. All A , B. & C.

6. At a constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with rise of temperature due to___________________?

   A. Decrease in mean free path
   B. Increased collision rate among molecules
   C. Increase in molecular attraction
   D. Increase in average molecular speed

7. One ‘Therm’ is equivalent to___________________?

   A. 105 BTU
   B. 105 kcal
   C. 109 BTU
   D. 109 kcal

8. According to the kinetic theory, the thermal conductivity of a monatomic gas is proportional to___________________?

   A. T
   B. T0.5
   C. T1.5
   D. T2

9. Trouton’s ratio of ______________ liquids is calculated using Kistyakowsky equation?

   A. Polar
   B. Non-polar
   C. Both A. & B
   D. Neither A. nor B

10. Gibbs-Duhem equation relates composition in liquid phase and the _____________ at constant temperature & pressure?

    A. Fugacity
    B. Partial pressure
    C. Activity co-efficient
    D. All (A), (B), and (C)