In an irreversible process________________?

Related Mcqs:

1. A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S1 and Δ SR are the entropy changes of the system for the irreversible and reversible processes respectively) ?

   A. Δ S1 is always Δ SR C. Δ S1 is always > Δ SR D. Δ S1 is always = Δ SR...

2. Entropy change for an irreversible process taking system and surrounding together is___________________?

   A. 0 B. > 0 C. < 0 D. None of these...

3. An irreversible process____________________?

   A. Is the analog of linear frictionless motion in machines B. Is an idealised visualisation of behaviour of a system C. Yields the maximum amount of work D. Yields an amount of work less than that of a reversible process...

4. For an irreversible process involving only pressure-volume work____________________?

   A. (dF)T, p <0 B. (dF)T, p = 0 C. (dF)T, p > 0 D. (dA)T, v >0...

5. Entropy change for an irreversible isolated system is__________________?

   A. ∞ B. 0 C. < 0 D. > 0...

6. The shape of T-S diagram for Carnot Cycle is a__________________?

   A. Rectangle B. Rhombus C. Trapezoid D. Circle...

7. A reasonably general expression for vapour-liquid phase equilibrium at low to moderate pressure is φi yi P = Yi xifi° where, Φ is a vapor fugacity component, Yi is the liquid activity coefficient and fi° is the fugacity of the pure component i. the Ki value (Yi = Ki xi) is therefore, in general a function of ______________________?

   A. Temperature only B. Temperature and pressure only C. Temperature, pressure and liquid composition xi only D. Temperature, pressure, liquid composition xi and vapour composition yi...

8. The change in __________ is equal to the reversible work for compression in steady state flow process under isothermal condition?

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

9. The root mean square speed of molecules of a gas is equal to (where, m = mass of the molecule K = Boltzmann‟s constant, T = absolute temperature) ?

   A. √(2KT/m) B. √(3KT/m) C. √(6KT/m) D. 3KT/m...

10. Which of the following is true for Virial equation of state ?

    A. Virial co-efficients are universal constants B. Virial co-efficients ‘B’ represents three body interactions C. Virial co-efficients are function of temperature only D. For some gases, Virial equations and ideal gas equations are the same...