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

Related Mcqs:

1. The equation Tds = dE – PdV applies to___________________?

   A. Single phase fluid of varying composition
   B. Single phase fluid of constant composition
   C. Open as well as closed systems
   D. Both B. and C

2. 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

3. The chemical potential of a component (μi) of a phase is the amount by which its capacity for doing all work, barring work of expansion is increased per unit amount of substance added for an infinitesimal addition at constant temperature and pressure. It is given by_________________?

   A. (∂E/∂ni)S, v, nj
   B. (∂G/∂ni)T, P, nj = (∂A/∂ni) T, v, nj
   C. (∂H/∂ni)S, P, nj
   D. All (A), B. and (C)

4. Clausius-Clapeyron equation is applicable to _____________ equilibrium processes?

   A. Solid-vapor
   B. Solid-liquid
   C. Liquid-vapor
   D. All A, B. and C

5. 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

6. 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.

7. Ideal gas law is applicable at____________________?

   A. Low T, low P
   B. High T, high P
   C. Low T, high P
   D. High T, low P

8. The thermodynamic law, PVy = constant, is not applicable in case of______________?

   A. Ideal compression of air
   B. Free expansion of an ideal gas
   C. Adiabatic expansion of steam in a turbine
   D. Adiabatic compression of a perfect gas

9. In the reaction; N2 + O2 ⇌ 2NO, increasing the pressure will result in_________________?

   A. Shifting the equilibrium towards right
   B. Shifting the equilibrium towards left
   C. No change in equilibrium condition
   D. None of these

10. According to Raoult’s law, “The vapor pressure exerted by component in a solution is proportional to the mole fraction of that component.” Raoult’s law is not applicable under the following assumption/condition?

    A. No component is concentrated at the surface of the solution
    B. The component molecules are non polar and are of almost equal size
    C. In the formation of solution, chemical combination/molecular association between unlike
    molecules takes place
    D. The attractive forces between like and unlike molecules are almost equal