MCQOPTIONS
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MCQOPTIONS
This section includes 6 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. |
The temperature of H2 at which the rms velocity of its molecules is seven times the rms velocity of the molecules of nitrogen at 300K is? |
| A. | 2100K |
| B. | 1700K |
| C. | 1350K |
| D. | 1050K |
| Answer» E. | |
| 2. |
If an ideal gas has a volume V at 27°C and it is heated at a constant pressure, so that its volume becomes 1.5V, then the value of final temperature is? |
| A. | 327K |
| B. | 177°C |
| C. | 873K |
| D. | 600°C |
| Answer» C. 873K | |
| 3. |
If a given mass of gas occupies a volume of 10cc at 1 atmospheric pressure and temperature 100°C, what will be its volume at 4 atmospheric pressure, the temperature being the same? |
| A. | 100cc |
| B. | 400cc |
| C. | 104cc |
| D. | 2.5cc |
| Answer» E. | |
| 4. |
R/Cv =0.67 for a gas. Then this gas is made up of which molecules? |
| A. | Diatomic |
| B. | Mixture of diatomic and polyatomic |
| C. | Monoatomic |
| D. | Polyatomic |
| Answer» D. Polyatomic | |
| 5. |
Assertion: Air pressure in a car tyre increases during driving. |
| A. | Reason: Absolute zero temperature is not zero energy temperature. |
| B. | Both assertion and reason are true and the reason is the correct explanation of the assertion |
| C. | Both assertion and reason are true but the reason is not a correct explanation of the assertion |
| D. | Assertion it true but the reason is false |
| E. | Both assertion and reason are false |
| Answer» C. Both assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 6. |
The gas having average speed four times as that of SO2 (molecular mass 64) is ___________ |
| A. | He(molecular mass 64) |
| B. | O2(molecular mass 4) |
| C. | H2(molecular mass 32) |
| D. | CH4(molecular mass 16) |
| Answer» B. O2(molecular mass 4) | |