McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Uncategorized topics .
Chapters
| 1. |
Normal force exerted per unit area by gas on walls of container is |
| A. | temperature |
| B. | energy |
| C. | pressure |
| D. | friction |
| Answer» C. pressure | |
| 2. |
Surface area of a typical person is about |
| A. | 1 m2 |
| B. | 2 m2 |
| C. | 3 m2 |
| D. | 4 m2 |
| Answer» B. 2 m2 | |
| 3. |
If we double the temperature of an ideal gas, then it's average kinetic energy will be |
| A. | halved |
| B. | triple the original |
| C. | fourth times of original |
| D. | doubled |
| Answer» D. doubled | |
| 4. |
Escape velocity for a particle is about{{}} |
| A. | 5 km s-1 |
| B. | 8 km s-1 |
| C. | 11 km s-1 |
| D. | 14 km s-1 |
| Answer» C. 11 km s-1 | |
| 5. |
Force exerted on a person by atmosphere is |
| A. | 200 000 N |
| B. | 300 000 N |
| C. | 400 000 N |
| D. | 500 000 N |
| Answer» A. 200 000 N | |
| 6. |
10 mole of carbon contains |
| A. | 6.02 × 10 24 atoms |
| B. | 6.03 × 10 23 atoms |
| C. | 6.02 × 10 23 atoms |
| D. | 6.04 × 10 24 atoms |
| Answer» A. 6.02 × 10 24 atoms | |
| 7. |
Space occupied by gas is |
| A. | area |
| B. | volume |
| C. | space |
| D. | mass |
| Answer» B. volume | |
| 8. |
At absolute zero, volume of gas is equal to |
| A. | 0 m3 |
| B. | 1 m3 |
| C. | 2 m3 |
| D. | 3 m3 |
| Answer» A. 0 m3 | |
| 9. |
Number of moles in 1.6 kg of oxygen is |
| A. | 30 mol |
| B. | 50 mol |
| C. | 40 mol |
| D. | 60 mol |
| Answer» B. 50 mol | |
| 10. |
Quantity R/NA defines |
| A. | Plank's constant |
| B. | Boltzmann constant |
| C. | gravitational constant |
| D. | Avagadro's constant |
| Answer» B. Boltzmann constant | |
| 11. |
Molar gas constant has value {{}} |
| A. | 7 J mol -1 K-1 |
| B. | 8 J mol -1 K-1 |
| C. | 8.31 J mol -1 K-1 |
| D. | 5 J mol -1 K-1 |
| Answer» C. 8.31 J mol -1 K-1 | |
| 12. |
If average kinetic energy of molecules is higher, then temperature of gas is |
| A. | high |
| B. | low |
| C. | zero |
| D. | infinite |
| Answer» A. high | |
| 13. |
The ideal gas equation is |
| A. | PV = constant |
| B. | PT = constant |
| C. | V⁄T |
| D. | PV = nRT |
| Answer» D. PV = nRT | |
| 14. |
Graph of p against 1⁄V is |
| A. | curve |
| B. | straight line |
| C. | parabola |
| D. | hyperbola |
| Answer» B. straight line | |
| 15. |
Gases deviate from gas laws at |
| A. | high temperature only |
| B. | low pressure only |
| C. | high pressure and low temperature |
| D. | low temperature only |
| Answer» C. high pressure and low temperature | |
| 16. |
Law which relates pressure and volume of gas is |
| A. | Charles's law |
| B. | Avogadro's law |
| C. | Boyle's law |
| D. | ideal gas law |
| Answer» C. Boyle's law | |
| 17. |
As compared to the volume occupied by gas, the volume of particles is |
| A. | more |
| B. | infinite |
| C. | negligible |
| D. | less than the volume of gas |
| Answer» C. negligible | |
| 18. |
Pressure of gas depends on the |
| A. | density of gas |
| B. | mean square speed of gas molecules |
| C. | both A and B |
| D. | temperature |
| Answer» C. both A and B | |
| 19. |
At standard pressure and temperature the average speed of molecules is |
| A. | 400 m s -1 |
| B. | 500 m s -1 |
| C. | 600 m s -1 |
| D. | 700 m s -1 |
| Answer» A. 400 m s -1 | |
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