MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A stone has initial potential, kinetic and internal energy 7 J, 10 J and 2x J respectively, if the final kinetic energy, potential energy and internal energy are 5 J, 21 J and x respectively, what is the final internal energy? |
| A. | 2 J |
| B. | 4 J |
| C. | 5 J |
| D. | 9 JView answer |
| Answer» E. | |
| 2. |
Ratio of change in internal energy of a substance from 15oC to T and from T to 10oC is – 2, what is T? |
| A. | 5oC |
| B. | 15oC |
| C. | 20oC |
| D. | 30oCView answer |
| Answer» B. 15oC | |
| 3. |
Ratio of change in internal energy of a substance from 4oC to T and from T to 10oC is 2, what is T? |
| A. | 5oC |
| B. | 6oC |
| C. | 7oC |
| D. | 8oCView answer |
| Answer» E. | |
| 4. |
What is the change in internal energy of 1 mole of air ((Cv = 2.1 X 104 J/moleoC), if its temperature changes from 10oC to 5oC? |
| A. | 84 kJ |
| B. | 105 kJ |
| C. | – 84 kJ |
| D. | – 105 kJView answer |
| Answer» E. | |
| 5. |
What is the change in internal energy of 2 mole of air (Cv = 2.1 X 104 J/moleoC), if its temperature changes from 10oC to 20oC? |
| A. | 420 kJ |
| B. | 540 kJ |
| C. | 840 kJ |
| D. | 1050 kJView answer |
| Answer» B. 540 kJ | |
| 6. |
A_STONE_HAS_INITIAL_POTENTIAL,_KINETIC_AND_INTERNAL_ENERGY_7_J,_10_J_AND_2X_J_RESPECTIVELY,_IF_THE_FINAL_KINETIC_ENERGY,_POTENTIAL_ENERGY_AND_INTERNAL_ENERGY_ARE_5_J,_21_J_AND_X_RESPECTIVELY,_WHAT_IS_THE_FINAL_INTERNAL_ENERGY??$ |
| A. | 2 J |
| B. | 4 J |
| C. | 5 J |
| D. | 9 J |
| Answer» E. | |
| 7. |
A stone has initial potential, kinetic and internal energy 4 J, 15 J and 20 J respectively, if the final kinetic energy and potential energy of the stone is 5 J and 10 J respectively, what is the final internal energy? |
| A. | 15 J |
| B. | 20 J |
| C. | 24 J |
| D. | 32 J |
| Answer» D. 32 J | |
| 8. |
A stone has initial potential and kinetic energy as 5 J and 20 J respectively if the final kinetic energy of the stone is 15 J what is its final potential energy? |
| A. | 0 |
| B. | 10 J |
| C. | 15 J |
| D. | 25 J |
| Answer» C. 15 J | |
| 9. |
A stone has initial potential and kinetic energy as 10 J and 5 J respectively if the final potential energy of the stone is 15 J what is its final kinetic energy? |
| A. | 0 |
| B. | 5 J |
| C. | 10 J |
| D. | 15 J |
| Answer» B. 5 J | |
| 10. |
Total energy of the universe is always ______ |
| A. | Increasing |
| B. | Decreasing |
| C. | Constant |
| D. | Cannot say |
| Answer» D. Cannot say | |
| 11. |
Ratio of change in internal energy of a substance from 15oC to T and from T to 10oC is – 2, what is T?$ |
| A. | 5<sup>o</sup>C |
| B. | 15<sup>o</sup>C |
| C. | 20<sup>o</sup>C |
| D. | 30<sup>o</sup>C |
| Answer» B. 15<sup>o</sup>C | |
| 12. |
Ratio of change in internal energy of a substance from 4oC to T and from T to 10oC is 2, what is T? |
| A. | 5<sup>o</sup>C |
| B. | 6<sup>o</sup>C |
| C. | 7<sup>o</sup>C |
| D. | 8<sup>o</sup>C |
| Answer» E. | |
| 13. |
What is the change in internal energy of 1 mole of air ((Cv = 2.1 X 104 J/moleoC), if its temperature changes from 10oC to 5oC? |
| A. | 84 kJ |
| B. | 105 kJ |
| C. | – 84 kJ |
| D. | – 105 kJ |
| Answer» E. | |
| 14. |
What is the change in internal energy of 2 mole of air (Cv = 2.1 X 104 J/moleoC), if its temperature changes from 10oC to 20oC? |
| A. | 420 kJ |
| B. | 540 kJ |
| C. | 840 kJ |
| D. | 1050 kJ |
| Answer» B. 540 kJ | |
| 15. |
What is the change in internal energy for a process which has final and initial states are exactly similar? |
| A. | Positive |
| B. | Negative |
| C. | Zero |
| D. | Cannot say |
| Answer» D. Cannot say | |