MCQOPTIONS
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MCQOPTIONS
This section includes 8 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. |
We have a jar filled with gas characterised by parameters P, V and T and another jar B filled with a gas with parameters 2P, V/4,2T; where the symbols have their usual meanings. The ratio of the number of molecules of jar A to those of jar B is? |
| A. | 1:1 |
| B. | 1:2 |
| C. | 2:1 |
| D. | 4:1 |
| Answer» E. | |
| 2. |
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. | |
| 3. |
Average velocity of a gas becomes 4 times. What will be the effect on rms velocity at the same temperature? |
| A. | 1.4 times |
| B. | 4 times |
| C. | 3 times |
| D. | 2 times |
| Answer» C. 3 times | |
| 4. |
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 | |
| 5. |
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. | |
| 6. |
Assertion: Air pressure in a car tyre increases during driving.
|
| 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 it true but the reason is false |
| D. | Both assertion and reason are false |
| Answer» C. Assertion it true but the reason is false | |
| 7. |
The gas having average speed four times as that of SO2 (molecular mass 64) is ___________ |
| A. | He(molecular mass 64) |
| B. | O<sub>2</sub>(molecular mass 4) |
| C. | H<sub>2</sub>(molecular mass 32) |
| D. | CH<sub>4</sub>(molecular mass 16) |
| Answer» B. O<sub>2</sub>(molecular mass 4) | |
| 8. |
The equation of state for g of oxygen at a pressure P, and temperature T, when occupying a volume V, will be? |
| A. | PV = (5/32)RT |
| B. | PV = 5RT |
| C. | PV = (5/2)RT |
| D. | PV = (5/16)RT |
| Answer» B. PV = 5RT | |