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Chemistry - Electrochemistry

Practise 10 NEST (NISER) previous year questions on Electrochemistry, compiled from papers spanning 2012 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 NEST (NISER) tests.

Electrochemistry has been asked in 8 of the 16 years of NEST (NISER) papers analysed (2011–2026), with 10 questions in all. 0% of them were easy, 80% moderate and 20% tough. Most of its questions came from 2023, with 2 questions that year. In the last three years (2024–2026) it had 3 questions across 4 papers, about 0.8 per paper.

The chapter's 3 topics are not weighted equally: Cells and Electrode Potential, Nernst Equation (7 questions, 70%), Conductance and Conductivity (2 questions, 20%), and Commercial Cells and Batteries (1 question, 10%) have been asked the most. Cells and Electrode Potential, Nernst Equation has also led over the last five years, with 4 questions. Cells and Electrode Potential, Nernst Equation has produced the most tough questions (1).

  1. 1Two galvanic cells, Cell I and Cell II, operate at the same temperature and involve two different redox systems. It is observed that at a pa2026Cells and Electrode Potential, Nernst Equation
  2. 2Consider the electrochemical cell with two metal/metal ion electrodes, represented as , where, M and N represent two different metals. The p2025Cells and Electrode Potential, Nernst Equation
  3. 3A Wheatstone bridge (Fig (i)) is setup with a conductivity measurement cell (shown in the figure as 'Cell') as one arm of the bridge. The ce2024 (Session 2)Conductance and Conductivity
  4. 4Biological standard potential is defined as the potential measured at . The species nicotinamide adenine dinucleotide (NADH) and its oxidise2023 (Session 2)Cells and Electrode Potential, Nernst Equation
  5. 5Consider the three electrodes , and , for which the standard electrode (oxidation) potentials are: , and , respectively. The standard EMF of2023 (Session 2)Cells and Electrode Potential, Nernst Equation
  6. 6The equivalent conductance of an aqueous solution of a strong electrolyte of concentration [X] is given by , where A is a constant and is th2020 (Session 1)Conductance and Conductivity
  7. 7In nature, many electron transfer reactions take place which are catalyzed by enzymes. Two such half-cell reactions are The reduction potent2020 (Session 2)Cells and Electrode Potential, Nernst Equation
  8. 8In electrolytic refining of blister copper2018Commercial Cells and Batteries
  9. 9Consider the cell , where and are the pressures at the left and right electrodes. The standard electrode potential of is 1.36 eV . The corre2013Cells and Electrode Potential, Nernst Equation
  10. 10For the complete electrolysis of 1 mole of water using a voltage of 100 V across two electrodes, the minimum amount of electrical energy (in2012Cells and Electrode Potential, Nernst Equation

Frequently Asked Questions

1.How many questions are available for Electrochemistry?

This chapter includes 10 questions compiled from NEST (NISER) papers spanning 2012 to 2026.

2.Are these questions only from NEST (NISER), or from other exams too?

These are NEST (NISER) 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 NEST (NISER) Chemistry?

Electrochemistry has appeared in 8 of the 16 years of NEST (NISER) papers covered here, with 10 questions across 9 papers - about one per paper it appears in.

4.What is the difficulty level of Electrochemistry questions in NEST (NISER)?

Of the 10 questions analysed for this chapter, 0% are easy, 80% moderate and 20% tough. 2023 had the most, with 2 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 - 7 questions (70%)
  • Conductance and Conductivity - 2 questions (20%)
  • Commercial Cells and Batteries - 1 question (10%)
  • Cells and Electrode Potential, Nernst Equation has produced the most tough questions (1).
6.Is Electrochemistry's weightage in NEST (NISER) going up or down?

Across all 9 papers analysed, Electrochemistry has averaged about 1.1 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.