Jump to a section

Chemistry - Electrochemistry

Practise 35 JEE Advanced previous year questions on Electrochemistry, compiled from papers spanning 2006 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 JEE Advanced tests.

Electrochemistry has been asked in 20 of the 27 years of JEE Advanced papers analysed (2000–2026), with 35 questions in all. 20% of them were easy, 46% moderate and 34% tough. Most of its questions came from 2006, with 4 questions that year. In the last three years (2024–2026) it had 5 questions across 6 papers, about 0.8 per paper.

The chapter's 2 topics are not weighted equally: Cells and Electrode Potential, Nernst Equation (24 questions, 69%) and Conductance and Conductivity (11 questions, 31%) have been asked the most. Cells and Electrode Potential, Nernst Equation has also led over the last five years, with 4 questions. Conductance and Conductivity has produced the most tough questions (7).

  1. 1At K, the molar conductivities of the aqueous solutions of three salts at two different concentrations are given below: Salt Concentration (2026 (Paper 2)Conductance and Conductivity
  2. 2In an electrochemicalcell, dichromate ions in aqueous acidic medium are reduced to . The current (in amperes) that flows through the cell fo2025 (Paper 1)Cells and Electrode Potential, Nernst Equation
  3. 3An electrochemical cell is fueled by the combustion of butane at 1 bar and 298 K . Its cell potential is volts, where is the Faraday constan2025 (Paper 2)Cells and Electrode Potential, Nernst Equation
  4. 4In a conductometric titration, small volume of titrant of higher concentration is added stepwise to a larger volume of titrate of much lower2024 (Paper 1)Conductance and Conductivity
  5. 5An aqueous solution of hydrazine is electrochemically oxidized by , thereby releasing chemical energy in the form of electrical energy. One 2024 (Paper 2)Cells and Electrode Potential, Nernst Equation
  6. 6Plotting 1 / m against c m for aqueous solutions of a monobasic weak acid ( HX ) resulted in a straight line with y - axis intercept of P an2023 (Paper 1)Conductance and Conductivity
  7. 7The reduction potential E 0 , in V of MnO 4 - aq / Mn s is [Given: E MnO 4 - aq / MnO 2 s o = 1 . 68 V ; E MnO 2 s / Mn 2 + aq o = 1 . 21 V 2022 (Paper 1)Cells and Electrode Potential, Nernst Equation
  8. 8Consider the strong electrolytes Z m X n , U m Y p and V m X n . Limiting molar conductivity of U m Y p and V m X n are 250 and 440 S cm 2 m2022 (Paper 2)Conductance and Conductivity
  9. 9Some standard electrode potentials at 298 K are given below: Pb 2 + / Pb - 0 . 13 V Ni 2 + / Ni - 0 . 24 V Cd 2 + / Cd - 0 . 40 V Fe 2 + / F2021 (Paper 2)Cells and Electrode Potential, Nernst Equation
  10. 10At , the limiting molar conductivity of a weak monobasic acid is . At , for an aqueous solution of the acid the degree of dissociation is an2021 (Paper 2)Conductance and Conductivity
  11. 11At , the limiting molar conductivity of a weak monobasic acid is . At , for an aqueous solution of the acid the degree of dissociation is an2021 (Paper 2)Conductance and Conductivity
  12. 12Consider a 70 % efficient hydrogen-oxygen fuel cell working under standard conditions at 1 bar and 298 K . Its cell reaction is H 2 ( g ) + 2020 (Paper 1)Cells and Electrode Potential, Nernst Equation
  13. 13For the electrochemical cell, Mg(s) Mg 2+ aq,1 M Cu 2+ aq,1 M Cu s the standard emf of the cell is 2 .70 V at 300 K . When the concentration2018 (Paper 1)Cells and Electrode Potential, Nernst Equation
  14. 14Consider an electrochemical cell: A s A n+ aq, 2 M B 2n+ aq, 1 M B s . The value of H o for the cell reaction is twice that of G o at 300 K 2018 (Paper 2)Cells and Electrode Potential, Nernst Equation
  15. 15The conductance of 0 .0015 M aqueous solution of a weak monobasic acid was determined by using a conductivity cell consisting of platinized 2017 (Paper 1)Conductance and Conductivity
  16. 16For the cell Zn s ZnSO 4 aq CuSO 4 aq Cu s , when the concentration of Zn 2 + is 10 times the concentration of Cu 2 + , the expression for G2017 (Paper 2)Cells and Electrode Potential, Nernst Equation
  17. 17For the following electrochemical cell at 289 K, Pt ( s ) | H 2 ( g , 1 bar ) | H + ( aq , 1 M ) | | M 4 + ( aq . ) , M 2+ ( aq . ) | Pt ( s2016 (Paper 2)Cells and Electrode Potential, Nernst Equation
  18. 18All the energy released from the reaction X Y , r G o = - 193 k J m o l - 1 is used for oxidizing M + as M + M 3 + + 2 e - , E o = - 0.25 V 2015 (Paper 1)Cells and Electrode Potential, Nernst Equation
  19. 19The molar conductivity of a solution of a weak acid HX (0.01 M) is 10 times smaller than the molar conductivity of a solution of a weak acid2015 (Paper 2)Conductance and Conductivity
  20. 20In a galvanic cell, the salt bridge2014 (Paper 1)Cells and Electrode Potential, Nernst Equation
  21. 21The standard reduction potential data at 25 C is given below. E Fe 3 + Fe 2 + = + 0 7 7 V ; E Fe 2 + Fe = - 0 4 4 V E Cu 2 + Cu = + 0 3 4 V 2013 (Paper 2)Cells and Electrode Potential, Nernst Equation
  22. 22An aqueous solution of X is added slowly to an aqueous solution of Y as shown in List I. The variation in conductivity of these reactions is2013 (Paper 2)Conductance and Conductivity
  23. 23The electrochemical cell shown below is a concentration cell. (saturated solution of a sparingly soluble salt, . The emf of the cell depends2012 (Paper 2)Cells and Electrode Potential, Nernst Equation
  24. 24The electrochemical cell shown below is a concentration cell. (saturated solution of a sparingly soluble salt, . The emf of the cell depends2012 (Paper 2)Cells and Electrode Potential, Nernst Equation
  25. 25was added to an aqueous solution gradually and the conductivity of the solution was measured. The plot of conductance versus the volume of i2011 (Paper 1)Conductance and Conductivity
  26. 26Consider the following cell reaction, and , the cell potential at is2011 (Paper 2)Cells and Electrode Potential, Nernst Equation
  27. 27Paragraph: The concentration of potassium ions inside a biological cell is at least twenty times higher than the outside. The resulting pote2010 (Paper 1)Cells and Electrode Potential, Nernst Equation
  28. 28Paragraph: The concentration of potassium ions inside a biological cell is at least twenty times higher than the outside. The resulting pote2010 (Paper 1)Cells and Electrode Potential, Nernst Equation
  29. 29For the reduction of ion in an aqueous solution is . Values of for some metal ions are given below. The pair(s) of metals that is (are) oxid2009 (Paper 2)Cells and Electrode Potential, Nernst Equation
  30. 30Electrolysis of dilute aq. solution was carried out by passing current. The time required to liberate mole of gas at the cathode is (1 Farad2008 (Paper 2)Cells and Electrode Potential, Nernst Equation
  31. 31Paragraph: Chemical reactions involve interaction of atoms and molecules. A large number of atoms/molecules (approximately ) are present in 2007 (Paper 1)Cells and Electrode Potential, Nernst Equation
  32. 32Paragraph: Tollen's reagent is used for the detection of aldehyde when a solution of is added to glucose with then gluconic acid is formed [2006Cells and Electrode Potential, Nernst Equation
  33. 33Paragraph: Tollen's reagent is used for the detection of aldehyde when a solution of is added to glucose with then gluconic acid is formed [2006Cells and Electrode Potential, Nernst Equation
  34. 34Paragraph: Tollen's reagent is used for the detection of aldehyde when a solution of is added to glucose with then gluconic acid is formed [2006Cells and Electrode Potential, Nernst Equation
  35. 35We have taken a saturated solution of is . If mole of are added to 1 litre of this solution, find conductivity (specific conductance) of thi2006Conductance and Conductivity

Frequently Asked Questions

1.How many questions are available for Electrochemistry?

This chapter includes 35 questions compiled from JEE Advanced papers spanning 2006 to 2026.

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

These are JEE Advanced 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 JEE Advanced Chemistry?

Electrochemistry has appeared in 20 of the 21 years of JEE Advanced papers covered here, with 35 questions across 27 papers - about one per paper it appears in.

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

Of the 35 questions analysed for this chapter, 20% are easy, 46% moderate and 34% tough. 2006 had the most, with 4 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 - 24 questions (69%)
  • Conductance and Conductivity - 11 questions (31%)
  • Conductance and Conductivity has produced the most tough questions (7).
6.Is Electrochemistry's weightage in JEE Advanced going up or down?

Across all 27 papers analysed, Electrochemistry has averaged about 1.3 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.8 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.