MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the standard reduction potential of the cathode of a galvanic cell if the standard EMF of the cell and the standard reduction potential of the anode are 2.71 and -2.37 respectively? |
| A. | 0.68 volts |
| B. | -0.68 volts |
| C. | -0.34 volts |
| D. | 0.34 volts |
| Answer» E. | |
| 2. |
What is the EMF of a galvanic cell if the standard reduction potential of the reduction half-reaction is -0.38 volts and the standard reduction potential of the oxidation half-reaction is 0.52 volts? |
| A. | -0.9 volts |
| B. | -0.6 volts |
| C. | 0.9 volts |
| D. | 0.6 volts |
| Answer» B. -0.6 volts | |
| 3. |
What is the EMF of a galvanic cell if the standard oxidation potential of the oxidation half-reaction is 0.64 volts and the standard reduction potential of the reduction half-reaction is 0.48 volts? |
| A. | 1.48 volts |
| B. | 1.12 volts |
| C. | 1.36 volts |
| D. | 0.96 volts |
| Answer» C. 1.36 volts | |
| 4. |
What is the EMF of a galvanic cell if E cathode = 0.80 volts and E anode = -0.76 volts? |
| A. | 1.56 volts |
| B. | 0.04 volts |
| C. | -1.56 volts |
| D. | -0.04 volts |
| Answer» B. 0.04 volts | |
| 5. |
Which of the following is a correct method to calculate the EMF of a galvanic cell? |
| A. | Standard EMF of the cell = [Standard reduction potential of the reduction half reaction] + [Standard reduction potential of the oxidation half reaction] |
| B. | Standard EMF of the cell = [Standard oxidation potential of the oxidation half reaction] [Standard reduction potential of the reduction half reaction] |
| C. | E <sub>cell</sub> = E <sub>cathode</sub> E <sub>anode</sub> |
| D. | Standard EMF of the cell = [Standard reduction potential of the right hand side electrode] + [Standard reduction potential of the left hand side electrode] |
| Answer» D. Standard EMF of the cell = [Standard reduction potential of the right hand side electrode] + [Standard reduction potential of the left hand side electrode] | |
| 6. |
Which of the following is the correct order of reactivity of metals? |
| A. | Zn > Mg > Fe > Cu > Ag |
| B. | Zn > Mg > Fe > Ag > Cu |
| C. | Mg > Zn > Fe > Ag > Cu |
| D. | Mg > Zn > Fe > Cu > Ag |
| Answer» E. | |
| 7. |
A cell is prepared by dipping a copper rod in 1 M CuSO4 solution and an iron rod in 2 M FeSO4 solution. What are the cathode and anode respectively? |
| A. | Cathode: Iron, Anode: Copper |
| B. | Cathode: Copper, Anode: Iron |
| C. | Cathode: Iron, Anode: Iron |
| D. | Cathode: Copper, Anode: Copper |
| Answer» C. Cathode: Iron, Anode: Iron | |
| 8. |
The electrode on which oxidation occurs is called the anode. True or False? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
Which of the following is false regarding galvanic cells? |
| A. | It converts chemical energy into electrical energy |
| B. | The electrolytes taken in the two beakers are different |
| C. | The reactions taking place are non-spontaneous |
| D. | To set up this cell, a salt bridge is used |
| Answer» D. To set up this cell, a salt bridge is used | |
| 10. |
Which of the following electrolytes is not preferred in a salt bridge? |
| A. | KCl |
| B. | KNO<sub>3</sub> |
| C. | NH<sub>4</sub>NO<sub>3</sub> |
| D. | NaCl |
| Answer» E. | |
| 11. |
Who invented the galvanic cell? |
| A. | Galvani and Volta |
| B. | Henry Cavendish |
| C. | Joseph Priestley |
| D. | Antoine Lavoisier |
| Answer» B. Henry Cavendish | |
| 12. |
A galvanic cell converts electrical energy into chemical energy. |
| A. | True |
| B. | False |
| Answer» C. | |