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. |
The degree of freedom of a triatomic gas is? |
| A. | 1 |
| B. | 2 |
| C. | 6 |
| D. | 8 |
| Answer» D. 8 | |
| 2. |
Statement: The root mean square and most probable speeds of the molecules in a gas is symmetrical.
|
| A. | Both statement and reason are true and the reason is the correct explanation of the statement |
| B. | Both statement and reason are true but the reason is not a correct explanation of the statement |
| C. | Statement it true but the reason is false |
| D. | Both statement and reason are false |
| Answer» E. | |
| 3. |
A bulb contains one mole of hydrogen mixed with one mole of oxygen at temperature T. The ratio of rms values of velocity of hydrogen molecules to that of oxygen molecules is? |
| A. | 1:16 |
| B. | 1:4 |
| C. | 4:1 |
| D. | 16:1 |
| Answer» D. 16:1 | |
| 4. |
The temperature of gas is held constant, while its volume is decreased. The pressure exerted by the gas on the wall of the container increases, because of its molecules ___________ |
| A. | Strike the walls with higher velocities |
| B. | Strike the walls with large farce |
| C. | Strike the walls more frequently |
| D. | Are in contact with the walls for a shorter time |
| Answer» D. Are in contact with the walls for a shorter time | |
| 5. |
A gas behaves as an ideal gas at ___________ |
| A. | Low pressure and high temperature |
| B. | Low pressure and low temperature |
| C. | High pressure and low temperature |
| D. | High pressure and high temperature |
| Answer» B. Low pressure and low temperature | |
| 6. |
For Boyle s law to hold good, the gas should be ___________ |
| A. | Perfect and of constant mass and temperature |
| B. | Real and of constant mass and temperature |
| C. | Perfect and at constant temperature but variable mass |
| D. | Real and at constant temperature but variable mass |
| Answer» B. Real and of constant mass and temperature | |
| 7. |
At Boyle s temperature? |
| A. | Joule s effect is positive |
| B. | Van der Waal s equation becomes zero |
| C. | Gases obey Boyle s law |
| D. | Water solidifies |
| Answer» D. Water solidifies | |
| 8. |
Cooking gas containers are kept in a lorry moving with uniform speed. The temperature of the gas molecules inside will ___________ |
| A. | Increase |
| B. | Decrease |
| C. | Remain the same |
| D. | Decreases for some, while the increase for others |
| Answer» D. Decreases for some, while the increase for others | |
| 9. |
The ration of the speed of sound in nitrogen gas to that in helium gas, at 300 K is? |
| A. | (2/7) |
| B. | (1/7) |
| C. | 3/5 |
| D. | 6/5 |
| Answer» D. 6/5 | |
| 10. |
On which factor does the average kinetic energy of gas molecules depend? |
| A. | Nature of the gas |
| B. | Temperature |
| C. | Volume |
| D. | Mass |
| Answer» C. Volume | |