Electrochemistry | Physical Chemistry | GPAT Mock Test

1. The function of a salt bridge in an electrochemical cell is to:

2. According to Faraday’s first law of electrolysis, the mass of a substance deposited at an electrode is directly proportional to:

3. The standard electrode potential (E°) of the Standard Hydrogen Electrode (SHE) is defined as:

4. The Nernst equation is given by E = E° – (RT/nF)lnQ. What does ‘n’ represent in this equation?

5. In a galvanic cell, the half-cell where oxidation occurs is called the:

6. Which of the following is an example of a secondary reference electrode?

7. A concentration cell is constructed from two identical half-cells, but with different concentrations of the electrolyte. The EMF of such a cell is generated due to:

8. Molar conductivity of an electrolyte solution increases with dilution. This is primarily because:

9. For a spontaneous reaction in a galvanic cell, the standard EMF (E°cell) must be:

10. How many Faradays of electricity are required to produce 20.0 g of calcium from molten CaCl₂? (Atomic mass of Ca = 40.0 g/mol)

11. In the electromotive series, metals with a more negative standard reduction potential are:

12. A glass electrode used for pH measurement is an example of what type of electrode?

13. The standard cell potential (E°cell) is calculated using the formula:

14. Which statement is correct for an electrolytic cell?

15. Kohlrausch’s law of independent migration of ions is used to determine:

16. The specific conductance of a 0.1 M KCl solution at 25°C is 0.0129 S cm⁻¹. The resistance of the cell containing the solution was found to be 100 Ω. The cell constant is:

17. Given E°(Zn²⁺/Zn) = -0.76 V and E°(Cu²⁺/Cu) = +0.34 V. What is the standard EMF of the Daniell cell?

18. The unit of electrochemical equivalent is:

19. The process of coating a metal with a thin layer of another metal by electrolysis is known as:

20. In the lead-acid storage battery (a secondary cell), the anode is made of:

21. The relationship between standard free energy change (ΔG°) and standard cell potential (E°cell) is:

22. What is the standard oxidation potential of an electrode if its standard reduction potential is -0.76 V?

23. An indicator electrode is one whose potential depends on the:

24. In the electrolysis of aqueous NaCl solution, which products are formed at the cathode and anode respectively?

25. A half-cell of the type Pt | Fe²⁺, Fe³⁺ is an example of: