MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
At constant pressure |
| A. | pdv=d(pv) |
| B. | dQ=du+d(pv) |
| C. | dQ=d(u+pv) |
| D. | all of the mentioned |
| Answer» E. | |
| 2. |
Change in enthalpy of a system is due to heat supplied at |
| A. | constant volume |
| B. | constant pressure |
| C. | both at constant volume and pressure |
| D. | none of the mentioned |
| Answer» C. both at constant volume and pressure | |
| 3. |
The enthalpy and internal energy are the function of temperature for |
| A. | all gases |
| B. | steam |
| C. | water |
| D. | ideal gas |
| Answer» E. | |
| 4. |
CHANGE_IN_ENTHALPY_OF_A_SYSTEM_IS_DUE_TO_HEAT_SUPPLIED_AT?$ |
| A. | constant volume |
| B. | constant pressure |
| C. | both at constant volume and pressure |
| D. | none of the mentioned |
| Answer» C. both at constant volume and pressure | |
| 5. |
At_constant_pressure$ |
| A. | pdv=d(pv) |
| B. | dQ=du+d(pv) |
| C. | dQ=d(u+pv) |
| D. | all of the mentioned |
| Answer» E. | |
| 6. |
The enthalpy and internal energy are the function of temperature fo? |
| A. | all gases |
| B. | steam |
| C. | water |
| D. | ideal gas |
| Answer» E. | |
| 7. |
Total enthalpy of a system H is given by |
| A. | H=h/m |
| B. | H=m/h |
| C. | H=mh |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 8. |
The enthalpy of an ideal gas depends only on the temperature. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 9. |
Heat transferred at constant pressure _____ the enthalpy of a system. |
| A. | decreases |
| B. | increases |
| C. | first decreases then increases |
| D. | first increases then decreases |
| Answer» C. first decreases then increases | |
| 10. |
Enthalpy is an intensive property of a system. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 11. |
For an ideal gas, enthalpy becomes |
| A. | h=u-RT |
| B. | h=-u-RT |
| C. | h=u+RT |
| D. | h=-u+RT |
| Answer» D. h=-u+RT | |
| 12. |
In a constant volume process, internal energy change is equal to |
| A. | heat transferred |
| B. | work done |
| C. | zero |
| D. | none of the mentioned |
| Answer» B. work done | |
| 13. |
The enthalpy of a substance(denoted by h), is defined as |
| A. | h=u-pv |
| B. | h=u+pv |
| C. | h=-u+pv |
| D. | h=-u-pv |
| Answer» C. h=-u+pv | |