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Chemistry - Electrochemistry

Practise 81 NEET previous year questions on Electrochemistry, compiled from papers spanning 2002 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty NEET tests.

Electrochemistry has been asked in 24 of the 39 years of NEET papers analysed (1988–2026), with 81 questions in all. 27% of them were easy, 40% moderate and 33% tough. Most of its questions came from 2009, with 8 questions that year. In the last three years (2024–2026) it had 8 questions across 13 papers, about 0.6 per paper.

The chapter's 4 topics are not weighted equally: Cells and Electrode Potential, Nernst Equation (56 questions, 69%), Conductance and Conductivity (19 questions, 23%), and Commercial Cells and Batteries (4 questions, 5%) have been asked the most. Cells and Electrode Potential, Nernst Equation has also led over the last five years, with 12 questions. Cells and Electrode Potential, Nernst Equation has produced the most tough questions (16).

  1. 1A solution of copper sulphate is electrolysed for minutes with a current of amperes. The mass of copper deposited at cathode is : (Given : M2026 (Cancelled)Cells and Electrode Potential, Nernst Equation
  2. 2Calculate emf of the half cell given below : V2026 (Cancelled)Cells and Electrode Potential, Nernst Equation
  3. 3The standard electrode potential ( ) for the half-cell reaction at K is (Given: V and V at K)2026 (Re-NEET)Cells and Electrode Potential, Nernst Equation
  4. 4For a salt , which is a strong electrolyte, the plot of versus has a slope of S cm mol L at K. At M concentration of , the value of is S cm 2026 (Re-NEET)Conductance and Conductivity
  5. 5If the molar conductivity of a solution of a monobasic weak acid is , its extent (degree) of dissociation will be [Assume and2025Conductance and Conductivity
  6. 6Mass in grams of copper deposited by passing 9.6487 A current through a voltmeter containing copper sulphate solution for 100 seconds is (Gi2024Cells and Electrode Potential, Nernst Equation
  7. 7From the following select the one which is not an example of corrosion.2024 (Re-NEET)Concentration cell
  8. 8The standard cell potential of the following cell is 0.32 V . Calculate the standard Gibbs energy change for the reaction : (Given : )2024 (Re-NEET)Cells and Electrode Potential, Nernst Equation
  9. 9The conductivity of centimolar solution of KCl at 25 C is 0 . 0210 ohm - 1 cm - 1 and the resistance of the cell containing the solution at 2023 (All India)Conductance and Conductivity
  10. 10Molar conductance of an electrolyte increases with dilution according to the equation: Which of the following statements are true? (A) This 2023 (Manipur)Conductance and Conductivity
  11. 11The correct value of cell potential in volt for the reaction that occurs when the following two half cells are connected, is2023 (Manipur)Cells and Electrode Potential, Nernst Equation
  12. 12The values for Identify the incorrect statement.2023 (Manipur)Cells and Electrode Potential, Nernst Equation
  13. 13Given below are half cell reactions : MnO 4 - + 8 H + + 5 e - Mn 2 + + 4 H 2 O , E Mn 2 + / MnO 4 - o = - 1 . 510 V 1 2 O 2 + 2 H + + 2 e - 2022 (Phase 1)Cells and Electrode Potential, Nernst Equation
  14. 14At 298 K , the standard electrode potentials of Cu 2 + / Cu , Zn 2 + / Zn , Fe 2 + / Fe and Ag + / Ag are 0 . 34 V , - 0 . 76 V , - 0 . 44 V2022 (Phase 1)Cells and Electrode Potential, Nernst Equation
  15. 15Find the emf of the cell in which the following reaction takes place at 298 K Ni ( s ) + 2 Ag + ( 0 . 001 M ) Ni 2 + ( 0 . 001 M ) + 2 Ag ( 2022 (Phase 1)Cells and Electrode Potential, Nernst Equation
  16. 16Two half cell reactions are given below : The standard EMF of a cell with feasible redox reaction will be :2022 (Phase 2)Cells and Electrode Potential, Nernst Equation
  17. 17Standard electrode potential for the cell with cell reaction is . Calculate the standard gibbs energy change for the cell reaction. (Given )2022 (Phase 2)Cells and Electrode Potential, Nernst Equation
  18. 18The molar conductance of NaCl , HCl and CH 3 COONa at infinite dilution are 126 . 45 , 426 . 16 and 91 . 0 Scm 2 mol - 1 respectively. The m2021Conductance and Conductivity
  19. 19The molar conductivity of 0 . 007 M acetic acid is 20 S cm 2 mol - 1 . What is the dissociation constant of acetic acid? Choose the correct 2021Conductance and Conductivity
  20. 20The number of Faradays(F) required to produce 20 g of calcium from molten CaCl 2 (Atomic mass of Ca = 40 g mol 1 ) is2020 (Phase 1)Cells and Electrode Potential, Nernst Equation
  21. 21Identify the reaction from following having top position in EMF series (Std.red. potential) according to their electrode potential at 298 K 2020 (Phase 2)Cells and Electrode Potential, Nernst Equation
  22. 22In a typical fuel cell, the reactants (R) and product (P) are :-2020 (Phase 2)Commercial Cells and Batteries
  23. 23For a cell involving one electron E c e l l = 0.59 V at 298 K , the equilibrium constant for the cell reaction is: G i v e n t h a t 2.303 R2019 (All India)Cells and Electrode Potential, Nernst Equation
  24. 24For the cell reaction 2 F e 3 + a q + 2 I - a q 2 F e 2 + a q + I 2 a q E c e l l 0 = 0.24 V at 298 K . The standard Gibbs energy r G - of t2019 (All India)Cells and Electrode Potential, Nernst Equation
  25. 25Following limiting molar conductivities are given as given as2019 (Odisha)Conductance and Conductivity
  26. 26The standard electrode potential values of and are and , respectively. The correct decreasing order of reducing power of the metal is2019 (Odisha)Cells and Electrode Potential, Nernst Equation
  27. 27Consider the change in oxidation state of Bromine corresponding to different emf values, as shown in the diagram below: Then, what is the sp2018Cells and Electrode Potential, Nernst Equation
  28. 28In the electrochemical cell: Zn ZnSO 4 0 .01 M CuSO 4 1 .0 M Cu , the emf of this Daniel cell is E 1 . When the concentration ZnSO 4 is chan2017Cells and Electrode Potential, Nernst Equation
  29. 29The pressure of H 2 required to make the potential of hydrogen electrode zero in pure water at 298 K is:2016 (Phase 1)Cells and Electrode Potential, Nernst Equation
  30. 30The molar conductivity of a 0.5 mol dm - 3 solution of A g N O 3 with electrolytic conductivity of 5.76 10 - 3 S c m - 1 at 298 K2016 (Phase 2)Conductance and Conductivity
  31. 31During the electrolysis of molten sodium chloride, the time required to produce 0 . 10 mol of chlorine gas using a current of 3 amperes is2016 (Phase 2)Cells and Electrode Potential, Nernst Equation
  32. 32If the E c e l l o for a given reaction has a negative value, which of the following gives the correct relationship for the values of G o an2016 (Phase 2)Cells and Electrode Potential, Nernst Equation
  33. 33The number of electrons delivered at the cathode, during electrolysis by a current of 1 ampere in 60 seconds is (charge on electron = 1.60 12016 (Phase 2)Cells and Electrode Potential, Nernst Equation
  34. 34Zinc can be coated on iron to produce galvanized iron but the reverse is not possible. It is because2016 (Phase 2)Cells and Electrode Potential, Nernst Equation
  35. 35A device that converts energy of combustion of fuels like hydrogen and methane, directly into electrical energy is known as:2015 (Phase 1)Commercial Cells and Batteries
  36. 36Aqueous solution of which of the following compounds is the best conductor of electric current?2015 (Phase 2)Commercial Cells and Batteries
  37. 37When 0.1 m o l M n O 4 2 - is oxidized the quantity of electricity required to completely M n O 4 2 - to M n O 4 - is2014Cells and Electrode Potential, Nernst Equation
  38. 38The weight of silver (at.wt. = 108 ) displaced by a quantity of electricity which displaces 5600 m L of O 2 at STP will be2014Cells and Electrode Potential, Nernst Equation
  39. 39A hydrogen gas electrode is made by dipping platinum wire in a solution of HCl of and by passing hydrogen gas around the platinum wire at pr2013 (All India)Cells and Electrode Potential, Nernst Equation
  40. 40At molar conductance of 0.1 molar aqueous solution of ammonium hydroxide is and at infinite dilution its molar conductance is . The degree o2013 (All India)Conductance and Conductivity
  41. 41A button cell used in watches functions as following If half cell potentials are The cell potential will be2013 (All India)Cells and Electrode Potential, Nernst Equation
  42. 42Consider the half-cell reduction reaction: The for the reaction , and possibility of the forward reaction are respectively2013 (Karnataka)Cells and Electrode Potential, Nernst Equation
  43. 43How many gram of cobalt metal will be deposited when a solution of cobalt (II) chloride is electrolyzed with a current of 10 amperes for 1092013 (Karnataka)Cells and Electrode Potential, Nernst Equation
  44. 44Standard reduction potentials of the half reactions are given below The strongest oxidising and reducing agents respectively are2012 (Mains)Cells and Electrode Potential, Nernst Equation
  45. 45Molar conductivities at infinite dilution of and are 126.4, 425.9 and respectively. for will be2012 (Mains)Conductance and Conductivity
  46. 46Four successive members of the first series of the transition metals are listed below. For which one of them the standard potential value ha2012 (Mains)Cells and Electrode Potential, Nernst Equation
  47. 47The Gibbs' energy for the decomposition of at is as follows The potential difference needed for the electrolytic reduction of aluminium oxid2012 (Mains)Cells and Electrode Potential, Nernst Equation
  48. 48Limiting molar conductivity of is equal to2012 (Screening)Conductance and Conductivity
  49. 49Standard electrode potential of three metals and are and respectively. The reducing power of these metals will be2011 (Screening)Cells and Electrode Potential, Nernst Equation
  50. 50The electrode potentials for2011 (Screening)Cells and Electrode Potential, Nernst Equation

Frequently Asked Questions

1.How many questions are available for Electrochemistry?

This chapter includes 81 questions compiled from NEET papers spanning 2002 to 2026.

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

These are NEET questions specifically for the Electrochemistry chapter. Questions from other exams like AIIMS or JIPMER are organised separately under their respective exam sections.

3.Is Electrochemistry an important chapter for NEET Chemistry?

Electrochemistry has appeared in 24 of the 25 years of NEET papers covered here, with 81 questions across 37 papers - about 2 per paper it appears in.

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

Of the 81 questions analysed for this chapter, 27% are easy, 40% moderate and 33% tough. 2009 had the most, with 8 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 - 56 questions (69%)
  • Conductance and Conductivity - 19 questions (23%)
  • Commercial Cells and Batteries - 4 questions (5%)
  • Cells and Electrode Potential, Nernst Equation has produced the most tough questions (16).
6.Is Electrochemistry's weightage in NEET going up or down?

Across all 37 papers analysed, Electrochemistry has averaged about 2.2 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.6 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.