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Chemistry - Electrochemistry

Practise 29 BITSAT previous year questions on Electrochemistry, compiled from papers spanning 2009 to 2024. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty BITSAT tests.

Electrochemistry has been asked in 14 of the 16 years of BITSAT papers analysed (2009–2024), with 29 questions in all. 7% of them were easy, 66% moderate and 28% tough. Most of its questions came from 2023, with 4 questions that year. In the last three years (2022–2024) it had 8 questions across 5 papers, about 1.6 per paper.

The chapter's 4 topics are not weighted equally: Cells and Electrode Potential, Nernst Equation (21 questions, 72%), Conductance and Conductivity (5 questions, 17%), and Commercial Cells and Batteries (2 questions, 7%) 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 (6).

  1. 1When the same quantity of electricity is passed through the aqueous solutions of the given electrolytes for the same amount of time, which m2024 (Memory Based Paper 2)Cells and Electrode Potential, Nernst Equation
  2. 2The pH of 0.5 L of 1.0 M NaCl solution after electrolysis for 965 s using 5.0 A current is,2024 (Memory Based Paper 3)Commercial Cells and Batteries
  3. 3Calculate the molarity of a solution containing 5 g of NaOH dissolved in the product of fuel cell operated at 1 A current for 595.1 hours. (2024 (Memory Based Paper 3)Commercial Cells and Batteries
  4. 4The conductivity of a weak acid HA of concentration is . If , the ionization constant of is equal to _______ x .2023 (Memory Based Paper 1)Conductance and Conductivity
  5. 5Electrode potential data are given below: Based on the data, the reducing power of , and will increase in the order2023 (Memory Based Paper 1)Cells and Electrode Potential, Nernst Equation
  6. 6Which of the following solutions of will have the highest value of specific conductance?2023 (Memory Based Paper 2)Conductance and Conductivity
  7. 7Given that ; The strongest oxidising agent is :2023 (Memory Based Paper 2)Cells and Electrode Potential, Nernst Equation
  8. 8Using the standard electrode potential, find out the pair between which redox reaction is not feasible. values2022Cells and Electrode Potential, Nernst Equation
  9. 9At , the molar conductance at infinite dilution for the strong electrolytes and are and respectively. in is2021Conductance and Conductivity
  10. 10E 1 , E 2 and E 3 are the emf of the following three galvanic cells respectively (i) Zn s Zn 2 + 0 . 1 M Cu 2 + 1 M Cu s (ii) Zn s Zn 2 + 1 2019Cells and Electrode Potential, Nernst Equation
  11. 11What time in sec is required for depositing all the silver present in 125 ml of 1 M AgNO 3 solution by passing a current of 241 . 25 A (Give2019Cells and Electrode Potential, Nernst Equation
  12. 120 . 5 F of electricity is passed through 500 mL of copper sulphate solution. The amount of copper which can be deposited will be2018Cells and Electrode Potential, Nernst Equation
  13. 13For a reaction, A + B 2 + B + A 2 + , at 25 0 C E 0 = 0 . 2955 V . The value of K eq is2018Cells and Electrode Potential, Nernst Equation
  14. 14Blocks of magnesium are fixed to the bottom of a ship to2017Cells and Electrode Potential, Nernst Equation
  15. 15How many moles of Fe 2 + ions are formed when excess of iron react with 500 mL O . 4 N HCl , under inert atmosphere? (assume no change in vo2017Cells and Electrode Potential, Nernst Equation
  16. 16The EMF of the cell is The cell EMF can be increased by2016Cells and Electrode Potential, Nernst Equation
  17. 17Electrolysis is carried out in three cells (A) Pt electrode (B) copper electrodes (C) Pt electrodes If volume of electrolytic solution is ma2016Cells and Electrode Potential, Nernst Equation
  18. 18The equilibrium constant for the disproportionation reaction at is2016Cells and Electrode Potential, Nernst Equation
  19. 19The efficiency of fuel cell is given by the expression, is2015Cells and Electrode Potential, Nernst Equation
  20. 20The mass of the substance deposited when one Faraday of charge is passed through its solution is equal to2015Cells and Electrode Potential, Nernst Equation
  21. 21In the cell reaction . By doubling the concentration of is2014Cells and Electrode Potential, Nernst Equation
  22. 22is unstable in solution and undergoes simultaneous oxidation and reduction according to the reaction : choose correct for above reaction if 2014Cells and Electrode Potential, Nernst Equation
  23. 23A current of 2.0 A passed for 5 hours through a molten metal salt deposits of metal (At wt. ). The oxidation state of the metal in the metal2013Cells and Electrode Potential, Nernst Equation
  24. 24The electrolytic cells, one containing acidified ferrous chloride and another acidified ferric chloride are connected in series. The ratio o2013Cells and Electrode Potential, Nernst Equation
  25. 25The ionic conductance of and respectively are 127 and at infinite dilution. The equivalent conductance of , at infinite dilution will be2012Conductance and Conductivity
  26. 26The number of coulombs required for the deposition of of silver is2011Cells and Electrode Potential, Nernst Equation
  27. 27When the sample of copper with zinc impurity is to be purified by electrolysis, the appropriate electrodes are2009Concentration cell
  28. 28The conductivity of a saturated solution of is and its equivalent conductance is equiv . The for will be2009Conductance and Conductivity
  29. 29In a cell that utilises the reaction addition of to cathode compartment, will2009Cells and Electrode Potential, Nernst Equation

Frequently Asked Questions

1.How many questions are available for Electrochemistry?

This chapter includes 29 questions compiled from BITSAT papers spanning 2009 to 2024.

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

These are BITSAT 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 BITSAT Chemistry?

Electrochemistry has appeared in 14 of the 16 years of BITSAT papers covered here, with 29 questions across 16 papers - about 2 per paper it appears in.

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

Of the 29 questions analysed for this chapter, 7% are easy, 66% moderate and 28% tough. 2023 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 - 21 questions (72%)
  • Conductance and Conductivity - 5 questions (17%)
  • Commercial Cells and Batteries - 2 questions (7%)
  • Cells and Electrode Potential, Nernst Equation has produced the most tough questions (6).
6.Is Electrochemistry's weightage in BITSAT going up or down?

Across all 16 papers analysed, Electrochemistry has averaged about 1.8 questions per paper. In the last three years (2022–2024), that average has stayed about the same, at about 1.6 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.