---

1. The standard reduction potential of hydrogen electrode is

A. 0 V B. -0.34 V C. -0.76 V D. +1.10 V

---

2. The product obtained at the cathode during the electrolysis of molten NaCl is

A. O2 B. Cl2 C. Na D. H2

---

3. Which of the following represents a redox reaction?

A. HCl + NaOH → NaCl + H2O B. 2Mg + O2 → 2MgO C. AgNO3 + NaCl → AgCl + NaNO3 D. NH3 + HCl → NH4Cl

---

4. The oxidation state of Mn in KMnO4 is

A. +7 B. +4 C. +6 D. +2

---

5. The cell potential of a galvanic cell becomes zero when

A. The cell reaches equilibrium B. The electrodes dissolve completely C. The electrolyte concentration increases D. The temperature decreases

---

6. The standard reduction potential of Zn2+/Zn is -0.76 V. It indicates that

A. Zn2+ is more stable than Zn B. Zn is a good oxidizing agent C. Zn is stable in the solution D. Zn is a good reducing agent

---

7. The function of a salt bridge in a galvanic cell is to

A. Allow flow of electrons B. Increase the potential of the cell C. Act as an electrode D. Maintain electrical neutrality

---

8. The oxidation number of Cl in Cl2O7 is

A. +7 B. +3 C. +5 D. +1

---

9. The Nernst equation relates electrode potential to

A. All of the above B. Temperature C. Concentration D. Number of electrons transferred

---

10. The Nernst equation for a single electrode potential is given by

A. E = E° / (RT/nF) ln(Q) B. E = E° + (RT/nF) ln(Q) C. E = E° - (RT/nF) ln(Q) D. E = E° × (RT/nF) ln(Q)

---

11. The oxidation state of nitrogen in HNO3 is

A. +1 B. +5 C. +3 D. -1

---

12. Which of the following metals is most reactive according to the electrochemical series?

A. Na B. Ca C. K D. Mg

---

13. The oxidation state of sulfur in H2SO4 is

A. +4 B. +2 C. +6 D. +8

---

14. The equivalent weight of FeSO4 in redox reactions is

A. M/4 B. M/2 C. M/1 D. M/3

---

15. The standard reduction potential of Ag+/Ag is +0.80 V. This means

A. Ag+ is easily reduced to Ag B. Ag+ is unstable C. Ag+ is easily oxidized D. Ag is a strong oxidizing agent

---

16. The value of the Faraday constant is approximately

A. 100000 C B. 96500 C C. 96.5 C D. 965 C

---

17. Which of the following is a reducing agent?

A. HCl B. H2S C. KMnO4 D. K2Cr2O7

---

18. The standard emf of a cell is given by

A. E°cell = E°cathode - E°anode B. E°cell = E°anode - E°cathode C. E°cell = E°anode × E°cathode D. E°cell = E°cathode × E°anode

---

19. Which of the following is an example of a primary battery?

A. Lead-acid battery B. Fuel cell C. Nickel-cadmium battery D. Dry cell

---

20. Which of the following metals is used as a cathode in electroplating?

A. Zinc B. Aluminium C. Copper D. Iron