For which of the following substances, the gas laws can be used with minimum error_________________?

Related Mcqs:

1. Which of the following can be regarded as gas so that gas laws could be applicable, within the commonly encountered temperature limits ?

   A. 02, N2, steam, C02
   B. Oz, N2, water vapour
   C. S02, NH3, C02, moisture
   D. 02, N2, H2, air
   E. steam vapours, H2, C02

2. A gas is compressed in a cylinder by a movable piston to a volume one-half its original volume. During the process 300 kJ heat left the gas and internal energy remained same. The work done on gas in Nm will be___________________?

   A. 300 Nm
   B. 300,000 Nm
   C. 30 Nm
   D. 3000 Nm
   E. 30,000 Nm

3. Which of the following laws is applicable for the behavior of a perfect gas__________________?

   A. Boyle’s law
   B. Charles’law
   C. Gay-Lussac law
   D. all of the above
   E. Joule’s law

4. For which of the following substances, the internal energy and enthalpy are the functions of temperature only____________________?

   A. any gas
   B. saturated steam
   C. water
   D. perfect gas
   E. superheated steam

5. An ideal gas as compared to a real gas at very high pressure occupies_________________?

   A. more volume
   B. less volume
   C. same volume
   D. unpredictable behaviour
   E. no such correlation

6. Universal gas constant is defined as equal to product of the molecular weight of the gas and_______________?

   A. specific heat at constant pressure
   B. specific heat at constant volume
   C. ratio of two specific heats
   D. gas constant
   E. unity.

7. Characteristic gas constant of a gas is equal to______________________?

   A. C/Cv
   B. Cv/Cp
   C. Cp – Cv
   D. Cp + Cv
   E. Cp x Cv

8. Properties of substances like pressure, temperature and density, in thermodynamic coordinates are__________________?

   A. path functions
   B. point functions
   C. cyclic functions
   D. real functions
   E. thermodynamic functions

9. Minimum work in compressor is possible when the value of adiabatic index n is equal to_________________?

   A. 0.75
   B. 1
   C. 1.27
   D. 1.35
   E. 2

10. General gas equation is____________________?

    A. PV=nRT
    B. PV=mRT
    D. PV = C
    C. PV=KiRT
    E. Cp-Cv = Wj