Heat and work are ____________________? - PakMcqs

Related Mcqs:

1. 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...

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. The unit of mass in S.I. units is ____________________?

   A. kilogram B. gram C. tonne D. quintal E. newton...

4. The condition of perfect vacuum, i.e., absolute zero pressure can be attained at ____________________?

   A. a temperature of – 273.16°C B. a temperature of 0°C C. a temperature of 273 °K D. a negative pressure and 0°C temperature E. can’t be attained...

5. According to which law, all perfect gases change in volume by l/273th of their original volume at 0°C for every 1°C change in temperature when pressure remains constant ____________________?

   A. Joule’s law B. Boyle’s law C. Regnault’s law D. Gay-Lussac law E. Charles’ law...

6. Which of the following items is not a path function ____________________?

   A. heat B. work C. kinetic energy D. vdp E. thermal conductivity...

7. Molecular volume of any perfect gas at 600 x 103 N/m2 and 27°C will be ____________________?

   A. 4.17m3/kgmol B. 400 m3/kg mol C. 0.15 m3/kg mol D. 41.7 m3/kg mol E. 417m3/kgmol...

8. Change in enthalpy of a system is the heat supplied at___________________?

   A. constant pressure B. constant temperature C. constant volume D. constant entropy E. N.T.P. condition...

9. Total heat of a substance is also known as __________________?

   A. internal energy B. entropy C. thermal capacity D. enthalpy E. thermal conductance...

10. Which law states that the specific heat of a gas remains constant at all temperatures and pressures______________________?

    A. Charles’ Law B. Joule’s Law C. Regnault’s Law D. Boyle’s Law E. there is no such law...