The expression, nRT ln(P1/P2), is for the _____________of an ideal gas?

Related Mcqs:

1. The expression, ΔG = nRT. ln(P2/P1), gives the free energy change______________?

   A. With pressure changes at constant temperature
   B. Under reversible isothermal volume change
   C. During heating of an ideal gas
   D. During cooling of an ideal gas

2. The compressibility factor of a gas is given by (where, V1 = actual volume of the gas V2 = gas volume predicted by ideal gas law)____________________?

   A. V1/V2
   B. V2/V1
   C. V1 – V2
   D. V1.V2

3. The expression, nCv(T2 – T1), is for the _____________ of an ideal gas?

   A. Work done under adiabatic condition
   B. Co-efficient of thermal expansion
   C. Compressibility
   D. None of these

4. Assuming applicability of ideal gas law, the pure component volume of the vapor in a saturated gas can be calculated from theoretical relationship. The volumetric composition of a vapor saturated gas is independent of the___________________?

   A. Nature of the liquid
   B. Nature of the gas
   C. Temperature of the liquid
   D. Total pressure

5. The equation, PV = nRT, is best obeyed by gases at____________________?

   A. Low pressure & high temperature
   B. High pressure & low temperature
   C. Low pressure & low temperature
   D. None of these

6. The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible _____________ process?

   A. Isobaric
   B. Isothermal
   C. Adiabatic
   D. None of these

7. The density of a gas ‘X’ is twice that of another gas ‘Y’. If the molecular weight of gas ‘Y’ is ‘M’; then the molecular weight of the gas ‘X’ will be________________?

   A. 2M
   B. M/2
   C. M
   D. M/4

8. The compressibility factor for an ideal gas is 1. Its value for any other real gas is_______________?

   A. 1
   B. 1
   D. Either B. or C, depends on the nature of the gas

9. A two stage compressor is used to compress an ideal gas. The gas is cooled to the initial temperature after each stage. The intermediate pressure for the minimum total work requirement should be equal to the _____________ mean of P1 and P2.(where, P1 and P2 are initial and final pressures respectively) ?

   A. Logarithmic
   B. Arithmetic
   C. Geometric
   D. Harmonic

10. Translational kinetic energy of molecules of an ideal gas is proportional to (where, T = absolute temperature of the gas)__________________?

    A. T
    B. √T
    C. T2
    D. 1/√T