MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
According to the Boltzmann, |
| A. | he introduced the thermodynamic probability with each state |
| B. | increase in entropy implies that the system proceeds by itself towards a state of higher thermodynamic probability |
| C. | an irreversible process goes on happening until the most probable is achieved |
| D. | all of the mentioned |
| Answer» E. | |
| 2. |
When does the entropy of a system become zero? |
| A. | W=0 |
| B. | W=1 |
| C. | W=-1 |
| D. | none of the mentioned |
| Answer» C. W=-1 | |
| 3. |
In the reversible adiabatic expansion of a gas the increase in disorder due to an increase in volume is compensated by the decrease in disorder due to a decrease in temperature. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 4. |
When heat is imparted to a system, |
| A. | the disorderly motion of molecules increases |
| B. | the entropy of the system increases |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 5. |
When work is dissipated into internal energy, what is the change in the disorderly motion of molecules. |
| A. | decreases |
| B. | increases |
| C. | remains same |
| D. | none of the mentioned |
| Answer» C. remains same | |
| 6. |
Orderly energy can be easily converted into disorderly energy. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 7. |
At equilibrium, the isolated system exists at the peak of the entropy-hill and |
| A. | dS=-1 |
| B. | dS=1 |
| C. | dS=infinity |
| D. | dS=0 |
| Answer» E. | |
| 8. |
When the potential gradient is ____, the entropy change of the universe is ____ |
| A. | large, zero |
| B. | infinitesimal, zero |
| C. | infinitesimal, negative |
| D. | none of the mentioned |
| Answer» C. infinitesimal, negative | |
| 9. |
A process always occurs in such a direction as to cause an increase in the entropy of the universe. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 10. |
Only those processes are possible in nature which would give an entropy ____ for the system and the surroundings together. |
| A. | decrease |
| B. | increase |
| C. | remains same |
| D. | none of the mentioned |
| Answer» C. remains same | |
| 11. |
The equation W= vdp holds good for |
| A. | work-producing machine like an engine or turbine |
| B. | work-absorbing machine like a pump or a compressor |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |