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

Related Mcqs:

1. The expression for entropy change given by, ΔS = nR ln (V2/V1) + nCv ln (T2/T1) is valid for ______________________?

   A. Reversible isothermal volume change
   B. Heating of a substance
   C. Cooling of a substance
   D. Simultaneous heating and expansion 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 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

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

   A. Compressibility
   B. Work done under adiabatic condition
   C. Work done under isothermal condition
   D. Co-efficient of thermal expansion

5. 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

6. 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

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. 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

10. The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called the ____________ temperature?

    A. Critical
    B. Boyle
    C. Inversion
    D. Reduced