MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
An ideal gas is heated from 27°C to 627°C at constant pressure. If initial volume was 4m3, then the final volume of the gas will be? |
| A. | 2m3 |
| B. | 4m3 |
| C. | 6m3 |
| D. | 12m3 |
| Answer» E. | |
| 2. |
Temperature of oxygen kept in a vessel is raised by 1°C at constant volume. Heat supplied to the gas may be taken partly as translational and partly rotational kinetic energies. Their respective shares are ___________ |
| A. | 60%, 40% |
| B. | 50%, 50% |
| C. | 100%, zero |
| D. | 40%, 60% |
| Answer» B. 50%, 50% | |
| 3. |
Statement: For an ideal gas at constant temperature, the product of the pressure and volume is a constant. |
| A. | Reason: The mean square velocity of the molecules is inversely proportional to mass. |
| B. | Both statement and reason are true and explanation is the correct explanation of the statement |
| C. | Both statement and reason are true but the explanation is not a correct explanation of the statement |
| D. | Statement it true but the reason is false |
| E. | Both statement and reason are false |
| Answer» C. Both statement and reason are true but the explanation is not a correct explanation of the statement | |
| 4. |
A vessel contains a mixture of 1 mole of oxygen and 2 moles of nitrogen at 300 K. The ratio of the average rotational kinetic energy per O2 molecule to that per N2 molecule is? |
| A. | 1:1 |
| B. | 1: 2 |
| C. | 2:1 |
| D. | Depends on the moment of inertia of the two molecules |
| Answer» E. | |
| 5. |
At room temperature, the rms speed of the molecules of a certain diatomic gas is found to be 1920ms-1. Which is the gas? |
| A. | H2 |
| B. | F2 |
| C. | O2 |
| D. | Cl2 |
| Answer» B. F2 | |