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

Related Mcqs:

1. If both Stirling and Carnot cycles operate within the same temperature limits, then efficiency of Stirling cycle as compared to Carnot cycle___________________?

   A. more
   B. less
   C. equal
   D. depends on other factors
   E. none of the above

2. 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

3. A manufacturer claims to have a heat engine capable of developing 20 h.p. by receiving heat input of 400 kcal/mt and working between the temperature limits of 227° C and 27° C. His claim is__________________?

   A. justified
   B. not possible
   C. may be possible with lot of sophistications
   D. cost will be very high
   E. theroretically possible

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

   A. dry steam
   B. wet steam
   C. saturated steam
   D. superheated steam
   E. steam at atmospheric pressure

5. 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

6. 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

7. 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.

8. 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

9. Boyle’s law i.e. pV = constant is applicable to gases under ___________________?

   A. all ranges of pressures
   B. only small range of pressures
   C. high range of pressures
   D. steady change of pressures
   E. atmospheric conditions

10. A perfect gas at 27°C is heated at constant pressure till its volume is double. The final temperature is________________?

    A. 54°C
    B. 327°C
    C. 108°C
    D. 654°C
    E. 600°C