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Chemistry - Electrochemistry

Practise 122 AP EAMCET previous year questions on Electrochemistry, compiled from papers spanning 2001 to 2025. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty AP EAMCET tests.

Electrochemistry has been asked in 24 of the 24 years of AP EAMCET papers analysed (2001–2024), with 122 questions in all. 47% of them were easy, 48% moderate and 5% tough. Most of its questions came from 2021, with 16 questions that year. In the last three years (2022–2024) it had 35 questions across 28 papers, about 1.3 per paper.

The chapter's 5 topics are not weighted equally: Cells and Electrode Potential, Nernst Equation (88 questions, 72%), Conductance and Conductivity (25 questions, 20%), and Commercial Cells and Batteries (7 questions, 6%) have been asked the most. Cells and Electrode Potential, Nernst Equation has also led over the last five years, with 40 questions. Cells and Electrode Potential, Nernst Equation has produced the most tough questions (6).

  1. 1Observe the following statements about dry cell I. It is a primary battery. II. Zinc vessel acts as cathode. III. A paste of moist and is pr27 May, 2025 (M)Commercial Cells and Batteries
  2. 2In a cell, a copper electrode was used as a cathode. What is the elecrode potential (in V ) of the copper electrode dipped in solution at 2926 May, 2025 (M)Cells and Electrode Potential, Nernst Equation
  3. 3Match the following List-I (symbol of electrical property) List-II (units) A) I) B) G II) C) III) D) IV) S The correct answer is26 May, 2025 (E)Conductance and Conductivity
  4. 4Consider the following cell reaction At 298 K, the cell emf is 0.237 V. The equilibrium constant for the reaction is . The value of is24 May, 2025 (M)Cells and Electrode Potential, Nernst Equation
  5. 5At 298 K, the following reaction takes place for a cell at the hydrogen electrode bar The solution pH is 10.0. What is the hydrogen electrod23 May, 2025 (M)Cells and Electrode Potential, Nernst Equation
  6. 6When the lead storage battery is in use (during discharge) the reaction that occurs at the anode is23 May, 2025 (E)Cells and Electrode Potential, Nernst Equation
  7. 7If and , the standard emf of the cell reaction is22 May, 2025 (M)Cells and Electrode Potential, Nernst Equation
  8. 8The resistance of a conductivity cell filled with 0.1 M KCl solution is . If the resistance of the same cell when filled with solution is , 22 May, 2025 (E)Conductance and Conductivity
  9. 9What is (in V) of the following cell at 298 K ?21 May, 2025 (M)Cells and Electrode Potential, Nernst Equation
  10. 10The specific conductance of 0.05 M NaOH solution is . What is its molar conductance in ?21 May, 2025 (E)Conductance and Conductivity
  11. 11At 300 K . the of is 1.0 V . If of this reaction is , what is (in ) of this reaction?( )23 May, 2024 (M)Cells and Electrode Potential, Nernst Equation
  12. 12In which of the following Galvanic cells emf is maximum? (Given: and )22 May, 2024 (M)Cells and Electrode Potential, Nernst Equation
  13. 13Which one of the following alkali metals is the weakest reducing agent as per their values?22 May, 2024 (E)Cells and Electrode Potential, Nernst Equation
  14. 14Consider the cell reaction, at 300 K Its is 1.0 V . The of the reaction is . What is (in J K ) of the reaction?22 May, 2024 (E)Cells and Electrode Potential, Nernst Equation
  15. 15As per standard reduction potential values, which is the strongest reducing agent among the given elements?21 May, 2024 (M)Cells and Electrode Potential, Nernst Equation
  16. 16The standard free energy change for the following reaction (in kJ ) at is (aq. 1 M ) (given : , )21 May, 2024 (M)Cells and Electrode Potential, Nernst Equation
  17. 17Consider the following standard electrode potentials ( in volts) in aqueous solution Based on this data, which of the following statements i21 May, 2024 (E)Cells and Electrode Potential, Nernst Equation
  18. 18The standard reduction potentials of , and are and 0.97 V pespectively. Identify the correct statements from the following I. does not oxidi21 May, 2024 (E)Cells and Electrode Potential, Nernst Equation
  19. 19Preview not available - open to view this question.20 May, 2024 (M)Cells and Electrode Potential, Nernst Equation
  20. 20The standard reduction potentials of . and are and 0.97 V respectively. Observe the following reactions I. II. III. Which reactions does not20 May, 2024 (E)Cells and Electrode Potential, Nernst Equation
  21. 212.644 g of metal (M) was deposited when 8040 coulombs of electricity was passed through molten salt. What is the atomic mass of19 May, 2024 (E)Cells and Electrode Potential, Nernst Equation
  22. 22The of is 0.3 V , At what concentration of (in ), the value becomes zero?18 May, 2024 (M)Cells and Electrode Potential, Nernst Equation
  23. 23At , the conductivity of solutions of molarity and are recorded as and respectively. The correct relation between and is19 May, 2023 (M)Conductance and Conductivity
  24. 24Some statements about Lechlanche cell are (I) Anode is zinc metal (II) Cathode is graphite rod surrounded by powdered and carbon (III)Electr18 May, 2023 (M)Commercial Cells and Batteries
  25. 25The standard electrode potential (in V) values for / are respectively18 May, 2023 (E)Cells and Electrode Potential, Nernst Equation
  26. 26The minimum voltage (in ) required to bring about the electrolysis of copper (II) sulphate solution at is18 May, 2023 (E)Cells and Electrode Potential, Nernst Equation
  27. 27The molar conductivity of methanoic acid is . The value of dissociation constant of this acid is Given and17 May, 2023 (M)Conductance and Conductivity
  28. 28Observe the following Ellingham diagram, and identify the incorrect statement regarding it17 May, 2023 (M)Cells and Electrode Potential, Nernst Equation
  29. 29The electrolyte used in mercury cell is17 May, 2023 (E)Commercial Cells and Batteries
  30. 30Molar conductivities at infinite dilution for , and are and respectively. The for ammonium hydroxide (in ) is16 May, 2023 (M)Conductance and Conductivity
  31. 31The time required (in hours) to reduce ions to ions with 2.0 amperes of current is16 May, 2023 (M)Cells and Electrode Potential, Nernst Equation
  32. 32Which one of the following has the highest molar conductivity?16 May, 2023 (M)Conductance and Conductivity
  33. 33Given below are two statements Assertion (A): Conductivity of an electrolyte decreases on dilution Reason (R): On dilution number of ions pe16 May, 2023 (E)Conductance and Conductivity
  34. 34In the Kolbe electrolysis of sodium propanoate, the products and are formed at respected electrodes. What are and ?15 May, 2023 (M)Cells and Electrode Potential, Nernst Equation
  35. 35The conductivity of a solution containing of anhydrous barium chloride in solution is . The molar conductivity of the solution (in is . The 15 May, 2023 (M)Conductance and Conductivity
  36. 36The number of Faradays required to completely deposit magnesium from of aq. solution is15 May, 2023 (E)Cells and Electrode Potential, Nernst Equation
  37. 37If 5 ampers of current is passed for 193 seconds through a solution containing Copper salt, of copper is deposited. What is the oxidation st08 Jul, 2022 (M)Cells and Electrode Potential, Nernst Equation
  38. 38The cell potential for the following cell notation is approximately08 Jul, 2022 (M)Cells and Electrode Potential, Nernst Equation
  39. 39The energy conversion involved in a galvanic cell is07 Jul, 2022 (M)Commercial Cells and Batteries
  40. 40What is the molar conductivity of at infinite dilution? Given that,06 Jul, 2022 (M)Conductance and Conductivity
  41. 41The standard Gibbs' energy change for Daniel cell reaction is06 Jul, 2022 (E)Cells and Electrode Potential, Nernst Equation
  42. 4296.5 amperes current is passed through the molten for 100 seconds. The mass of aluminium deposited at the cathode is (atomic weight of )05 Jul, 2022 (M)Cells and Electrode Potential, Nernst Equation
  43. 43Resistance of a conductivity cell filled with is . If the resistance of the same cell when filled with solution is 258 ohm, the conductivity05 Jul, 2022 (E)Conductance and Conductivity
  44. 44The reduction potential of hydrogen electrode at 25 C in a neutral solution is P H 2 = 1 atm04 Jul, 2022 (M)Cells and Electrode Potential, Nernst Equation
  45. 4538 . 6 amperes of current is passed for 100 seconds through an aqueous CuSO 4 solution using platinum electrodes. The mass of copper consume04 Jul, 2022 (E)Cells and Electrode Potential, Nernst Equation
  46. 46Which condition among the following holds true at the state of half-completion for the reaction ?25 Aug, 2021 (M)Cells and Electrode Potential, Nernst Equation
  47. 47A hydrogen electrode is made by dipping platinum wire in a solution of nitric acid of and passing hydrogen gas around the platinum wire at p25 Aug, 2021 (M)Cells and Electrode Potential, Nernst Equation
  48. 48Salts of and were electrolysed under identical conditions using the same quantity of electricity. It was found that when of was deposited, t25 Aug, 2021 (M)Cells and Electrode Potential, Nernst Equation
  49. 49The molar conductivities of and are 100,120 and , respectively. The molar conductivity of would be .......... cm .24 Aug, 2021 (M)Conductance and Conductivity
  50. 50If the conductivity of a solution at is , then the molar conductivity of the solution would be .24 Aug, 2021 (M)Conductance and Conductivity

Frequently Asked Questions

1.How many questions are available for Electrochemistry?

This chapter includes 122 questions compiled from AP EAMCET papers spanning 2001 to 2025.

2.Are these questions only from AP EAMCET, or from other exams too?

These are AP EAMCET questions specifically for the Electrochemistry chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is Electrochemistry an important chapter for AP EAMCET Chemistry?

Electrochemistry has appeared in 25 of the 25 years of AP EAMCET papers covered here, with 122 questions across 85 papers - about one per paper it appears in.

4.What is the difficulty level of Electrochemistry questions in AP EAMCET?

Of the 122 questions analysed for this chapter, 47% are easy, 48% moderate and 5% tough. 2021 had the most, with 16 questions.

5.Which topics in Electrochemistry should I focus on?

These topics have carried the most weightage in Electrochemistry:

  • Cells and Electrode Potential, Nernst Equation - 88 questions (72%)
  • Conductance and Conductivity - 25 questions (20%)
  • Commercial Cells and Batteries - 7 questions (6%)
  • Cells and Electrode Potential, Nernst Equation has produced the most tough questions (6).
6.Is Electrochemistry's weightage in AP EAMCET going up or down?

Across all 85 papers analysed, Electrochemistry has averaged about 1.4 questions per paper. In the last three years (2022–2024), that average has stayed about the same, at about 1.3 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.