MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
During adiabatic compression of a gas, its temperature ___________ |
| A. | Falls |
| B. | Remains constant |
| C. | Rises |
| D. | Becomes zero |
| Answer» D. Becomes zero | |
| 2. |
The change in internal energy, when a gas is cooled from 927 to 27 is? |
| A. | 100% |
| B. | 300% |
| C. | 200% |
| D. | 75% |
| Answer» E. | |
| 3. |
Assertion: Reversible systems are difficult to find in the real world.
|
| A. | Both assertion and reason are true and the reason is the correct explanation of the assertion |
| B. | Both assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | Assertion is true but the reason is false |
| D. | Both assertion and reason are false |
| Answer» B. Both assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 4. |
If the amount of heat given to a system is 35 J and the amount of work done by the system is -15J and the amount of work done by the system is -15J, then the change in the internal energy of the system is? |
| A. | -50J |
| B. | 20J |
| C. | 30 |
| D. | 50J |
| Answer» E. | |
| 5. |
The latent heat of vaporisation of water is 2,240 J. If the work done in the process of vaporisation of 1g is 168 J, then the increase in internal energy is? |
| A. | 2408 J |
| B. | 2240 J |
| C. | 2072 J |
| D. | 1904 J |
| Answer» D. 1904 J | |
| 6. |
Which is an intensive property? |
| A. | Volume |
| B. | Mass |
| C. | Refractive index |
| D. | Weight |
| Answer» D. Weight | |
| 7. |
The change internal energy in a cyclic process is ___________ |
| A. | Zero |
| B. | Infinity |
| C. | Constant |
| D. | Unity |
| Answer» B. Infinity | |
| 8. |
The molar specific heat constant pressure of an ideal gas is 7R/2. The ratio of specific heat at constant pressure to that at constant volume is? |
| A. | 9/7 |
| B. | 8/7 |
| C. | 7/5 |
| D. | 5/7 |
| Answer» D. 5/7 | |
| 9. |
110 J of heat is added to a gaseous system, whose internal energy increases by 40 J. Then the amount of external work done is? |
| A. | 150 J |
| B. | 70 J |
| C. | 110 J |
| D. | 40 J |
| Answer» C. 110 J | |
| 10. |
The internal energy change in a system that has absorbed 2kcal of heat and done 500 J of work is? |
| A. | 6400 J |
| B. | 5400 J |
| C. | 7900 J |
| D. | 8900 J |
| Answer» D. 8900 J | |