McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Uncategorized topics .
Chapters
| 1. |
Supply of energy depends upon |
| A. | mass of material |
| B. | the change in temperature |
| C. | the material itself |
| D. | all of above |
| Answer» D. all of above | |
| 2. |
All substances have minimum internal energy at |
| A. | absolute zero |
| B. | 0°C |
| C. | 0°F |
| D. | 100K |
| Answer» A. absolute zero | |
| 3. |
Specific heat of aluminum when 26400 J of energy is supplied to 2 kg block and it's temperature rises from 20 °C to 35 °C is {{}} |
| A. | 1000 J kg-1 K-1 |
| B. | 70 J kg-1 K-1 |
| C. | 400 J kg1 K-1 |
| D. | 880 J kg -1 K-1 |
| Answer» D. 880 J kg -1 K-1 | |
| 4. |
On compression, the gat gets hotter due to |
| A. | increase in kinetic energy |
| B. | decrease in kinetic energy |
| C. | increase in potential energy |
| D. | increase in atomic collisions |
| Answer» A. increase in kinetic energy | |
| 5. |
If there is no transfer of energy between two objects then their temperature is |
| A. | same |
| B. | different |
| C. | zero |
| D. | infinite |
| Answer» A. same | |
| 6. |
Average kinetic energy of gas molecules is proportional to |
| A. | internal energy |
| B. | thermodynamic temperature |
| C. | enthalpy |
| D. | condensation point |
| Answer» B. thermodynamic temperature | |
| 7. |
Celsius scale is based on properties of |
| A. | Mercury |
| B. | Aluminum |
| C. | Cesium |
| D. | Water |
| Answer» D. Water | |
| 8. |
Energy required per unit mass of substance to raise temperature of that substance by 1 K is called |
| A. | enthalpy |
| B. | internal energy |
| C. | specific heat capacity |
| D. | temperature |
| Answer» C. specific heat capacity | |
| 9. |
Measure of average kinetic energy of molecules is |
| A. | temperature |
| B. | energy |
| C. | internal energy |
| D. | enthalpy |
| Answer» A. temperature | |
| 10. |
Energy of molecules of any substance is known as |
| A. | kinetic energy |
| B. | potential energy |
| C. | internal energy |
| D. | chemical energy |
| Answer» C. internal energy | |
| 11. |
Due to evaporation from certain surface, it's temperature |
| A. | falls |
| B. | increases |
| C. | doesn't change |
| D. | becomes zero |
| Answer» A. falls | |
| 12. |
Change of liquid in to gas without boiling is called |
| A. | vaporization |
| B. | sublimation |
| C. | boiling |
| D. | evaporation |
| Answer» D. evaporation | |
| 13. |
On heating a solid, as the separation of atoms increases the potential energy |
| A. | decreases |
| B. | remains constant |
| C. | increases |
| D. | becomes zero |
| Answer» C. increases | |
| 14. |
Temperature can't be lower than |
| A. | 0 °C |
| B. | 0 °F |
| C. | 0 K |
| D. | 0 °R |
| Answer» C. 0 K | |
| 15. |
When a substance is melted, it's temperature doesn't rise because |
| A. | energy is lost somewhere |
| B. | energy is used to break the bonds |
| C. | energy is used to make bonds |
| D. | energy is absorbed to make bonds |
| Answer» B. energy is used to break the bonds | |
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