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___________________?

Related Mcqs:

1. If a gas is heated against a pressure, keeping the volume constant, then work done will be equal to__________________?

   A. + v B. – ve C. zero D. pressure x volume E. any where between zero and infinity...

2. Change in internal energy in a closed system is equal to heat transferred if the reversible process takes place at constant_______________?

   A. pressure B. temperature C. volume D. internal energy E. entropy...

3. In an isothermal process, the internal energy of gas molecules________________?

   A. increases B. decreases C. remains constant D. may increase/decrease depending on the properties of gas E. shows unpredictable behaviour...

4. The pressure’of a gas in terms of its mean kinetic energy per unit volume E is equal to________________?

   A. E/3 B. E/2 C. 3E/4 D. 2E/3 E. 5E/4...

5. Which law states that the internal energy of a gas is a function of temperature__________________?

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

6. For a thermodynamic process to be reversible, the temperature difference between hot body and working substance should be___________________?

   A. zero B. minimum D. maximum D. infinity E. there is no such criterion...

7. Compressed air coming out from a punctured football___________________?

   A. becomes hotter B. becomes cooler1 C. remains at the same temperature D. may become hotter or cooler depend-ing upon the humidity of the surround¬ing air E. attains atmospheric temperature...

8. Work done in a free expansion process is___________________?

   A. + ve B. -ve C. zero D. maximum E. minimum...

9. In a non-flow reversible process for which p = (- 3V+ 15) x 105N/m2,V changes from 1 m to 2 m3. The work done will be about_______________?

   A. 100 xlOO5 joules B. lxlO5 joules C. 10 xlO5 joules D. 10 xlO5 kilo joules E. 10xl04kiojoules...

10. Work done in an adiabatic process between a given pair of end states depends on__________________?

    A. the end states only B. particular adiabatic process C. the value of index n D. the value of heattransferred E. mass of the system...