MCQOPTIONS
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MCQOPTIONS
This section includes 20 Mcqs, each offering curated multiple-choice questions to sharpen your Applied Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The energy of the fuel cells ___________ |
| A. | Can be recharged |
| B. | Cannot be recharged |
| C. | Is stored |
| D. | Cannot be said |
| Answer» D. Cannot be said | |
| 2. |
In primary cells reaction is not reversible. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
The emf of the Weston standard cell is __________ at 20oC. |
| A. | 16.7989V |
| B. | 5.2572V |
| C. | 1.0183V |
| D. | 0V |
| Answer» D. 0V | |
| 4. |
___________ is the device used to measure the emf of the cell. |
| A. | Voltmeter |
| B. | Potentiometer |
| C. | Ammeter |
| D. | Multimeter |
| Answer» C. Ammeter | |
| 5. |
The calomel electrode is only used as _________ |
| A. | Oxidising electrode |
| B. | Reducing electrode |
| C. | Depends on the half cell |
| D. | Cannot be said |
| Answer» C. Depends on the half cell | |
| 6. |
For 1N KCL standard reduction potential in the calomel electrode is __________ |
| A. | 0.28V |
| B. | 0.25V |
| C. | 0.5V |
| D. | 1V |
| Answer» B. 0.25V | |
| 7. |
In standard calomel electrode, for saturated KCL solution, electrode potential is __________ |
| A. | 0.897V |
| B. | 0.456V |
| C. | 0.3512V |
| D. | 0.2415V |
| Answer» E. | |
| 8. |
If the standard hydrogen electrode is used as the reduction electrode, then the emf is given by __________ |
| A. | Ered = -Eo + (5/n) log10 [H+] |
| B. | Ered = -Eo – (0.0591/n) log10 [H+] |
| C. | Ered = Eo + (0.0591/n) log10 [H+] |
| D. | Ered = -Eo + (0.0591/n) log10 [H+] |
| Answer» E. | |
| 9. |
In standard hydrogen electrode, concentration of hydrogen is ____________ |
| A. | 0M |
| B. | 0.5M |
| C. | 1M |
| D. | 1.5M |
| Answer» D. 1.5M | |
| 10. |
___________IS_THE_DEVICE_USED_TO_MEASURE_THE_EMF_OF_THE_CELL.?$ |
| A. | Voltmeter |
| B. | Potentiometer |
| C. | Ammeter |
| D. | Multimeter |
| Answer» C. Ammeter | |
| 11. |
In primary cells reaction is not reversible.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
The_emf_of_the_Weston_standard_cell_is____________at_20oC.$ |
| A. | 16.7989V |
| B. | 5.2572V |
| C. | 1.0183V |
| D. | 0V |
| Answer» D. 0V | |
| 13. |
The_energy_of_the_fuel_cells____________ |
| A. | Can be recharged |
| B. | Cannot be recharged |
| C. | Is stored |
| D. | Cannot be said |
| Answer» D. Cannot be said | |
| 14. |
The calomel electrode is only used as________? |
| A. | Oxidising electrode |
| B. | Reducing electrode |
| C. | Depends on the half cell |
| D. | Cannot be said |
| Answer» C. Depends on the half cell | |
| 15. |
For 1N KCL standard reduction potential in the calomel electrode is__________ |
| A. | 0.28V |
| B. | 0.25V |
| C. | 0.5V |
| D. | 1V |
| Answer» B. 0.25V | |
| 16. |
In standard calomel electrode, for saturated KCL solution, electrode potential is__________ |
| A. | 0.897V |
| B. | 0.456V |
| C. | 0.3512V |
| D. | 0.2415V |
| Answer» E. | |
| 17. |
If the standard hydrogen electrode is used as the reduction electrode, then the emf is given by__________ |
| A. | E<sub>red</sub> = -E<sup>o</sup> + (5/n ) log<sub>10</sub> [H<sup>+</sup>]. |
| B. | E<sub>red</sub> = -E<sup>o</sup> – (0.0591/n ) log<sub>10</sub> [H<sup>+</sup>]. |
| C. | E<sub>red</sub> = E<sup>o</sup> + (0.0591/n ) log<sub>10</sub> [H<sup>+</sup>]. |
| D. | E<sub>red</sub> = -E<sup>o</sup> + (0.0591/n ) log<sub>10</sub> [H<sup>+</sup>]. |
| Answer» E. | |
| 18. |
The emf of the standard hydrogen electrode is ____________ |
| A. | 0V |
| B. | 1V |
| C. | 2V |
| D. | 3V |
| Answer» B. 1V | |
| 19. |
The temperature maintained in the standard hydrogen electrode is _____________ |
| A. | 22<sup>o</sup>C |
| B. | 23<sup>o</sup>C |
| C. | 24<sup>o</sup>C |
| D. | 25<sup>o</sup>C |
| Answer» E. | |
| 20. |
In standard hydrogen electrode, concentration of hydrogen is____________ |
| A. | 0M |
| B. | 0.5M |
| C. | 1M |
| D. | 1.5M |
| Answer» D. 1.5M | |