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Sunday, 25 October

JEE Main · Chemistry · Class 11

Equilibrium: JEE Main previous year questions

127 questions in 104 of the 108 JEE Main shifts Lumi analysed, asked in 8 of 8 years. Here is what this chapter tests and how.

Study this chapter
Questions
127
in 104 of 108 shifts · 8 of 8 years
Average a shift
1.1
of 25 Chemistry · 1.2 since 2024 0.2
Typical range
0.8–1.2
questions a shift; fewest 0.8, most 1.7
Weighted estimate
1.3
model, recent years count more · about 5.1 marks
  • Typical range (fact)
  • Average a shift (fact)
  • Weighted estimate (model)

Questions are counted per shift, out of the 25 each subject has, in the shifts Lumi analysed; papers that offered 30 a subject (2017, 2021–2024) are scaled to 25. Typical range: the middle six of the eight years (2017, 2020–2026), leaving out the single highest and lowest year. The average and the range are historical fact. The weighted estimate is a model: each year's share, with recent years counting more (half-life three years), and chapters NTA dropped from the syllabus set near zero. It is a guide to effort, not a forecast of the paper.

What to do

How to spend time on Equilibrium

Priority

Must do

One of the 9 Chemistry chapters that together held the first half of Chemistry questions in the 108 shifts analysed. How bands are set

Past questions
127in 104 of 108 shifts
Study plan gives it
21 hover 12 months; 16 h over 6
Study this chapter →

Ideas asked most often

  1. Equilibrium Constant for Modified Equations9×
  2. Solubility-Ksp Relationship8×
  3. pH of Strong Acids and Bases7×
  4. Common Ion Effect6×
  5. Degree of Dissociation5×

92 of the 152 ideas in Lumi’s map of this chapter have not been asked or touched in the shifts analysed. Of its idea-tagged questions from 2024 on, 15% tested an idea not asked in an earlier year, so learn the whole chapter, not just the list above.

Within each subject, chapters in NTA's 2026 syllabus are ranked by their average questions a shift over all 8 years analysed (history, not the model). Going down that list, the chapters that together held the first half of the subject's questions are Must do; the next ones, up to 80%, are Should do; the rest are Lower priority.

Key findings

Equilibrium at a glance

  1. 01

    85%

    of its 41 questions from 2024 on that Lumi matched to an idea tested one JEE Main had asked in an earlier year; 100% came from a topic asked in an earlier year.

  2. 02

    61%

    of the 152 ideas in Lumi's map of the chapter have not been asked or touched on in the shifts analysed.

  3. 03

    48%

    of its questions asked for a numerical answer, 1.6 times the Chemistry average.

  4. 04

    6%

    of its questions were rated hard, against 6% across all Chemistry questions in the same shifts.

Questions a shift, year by year

Out of the 25 Chemistry questions in a shift. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift.

0240.8’171.2’201’210.9’221’230.8’241.1’251.7’26

Raw count: 2017: 1 in 1 shift · 2020: 14 in 12 shifts · 2021: 29 in 24 shifts · 2022: 27 in 24 shifts · 2023: 14 in 12 shifts · 2024: 18 in 18 shifts · 2025: 9 in 8 shifts · 2026: 15 in 9 shifts.

Kind of question

SHARE OF QUESTIONS
  • Numerical answer48%
  • Calculation22%
  • Application7%
  • Conceptual6%
  • Two statements5%
  • Multi-step3%
  • Assertion–reason3%
  • Recall, single correct2%
  • Diagram based2%
  • Data or graph2%

Most common asks: equilibrium constant of combined reactions (2); standard gibbs energy from degree of dissociation (2); kc from kp (2).

Profile

This chapter in numbers

Where it ranks, how steady it is, and what it costs to study.

Rank, all JEE chapters
#19
of 70 by weighted estimate
Rank in Chemistry
#7
of 21 chapters
Share of Chemistry
4.3%
of its questions, all shifts analysed
Busiest year
2026
1.7 questions a shift
Year to year
Steady
varies by about 0.3 questions a shift
Long-run direction
+0.05
questions a shift, per year
Easy questions
33%
6% rated hard
Numerical answer
48%
1.6× the Chemistry rate
With a figure
5%
graph, diagram or structure
Study time
21 h
16 h on a 6-month plan
Marks per study hour
0.24
#29 of 70 chapters
Foundation for others
64%
of its ideas are used in other chapters

Difficulty, year by year

Each question rated easy, medium or hard. Each bar is that year’s split, so years compare directly; the number is the questions in that year’s analysed shifts (1 to 24 shifts a year).

  • 20171
  • 202014
  • 202129
  • 202227
  • 202314
  • 202418
  • 20259
  • 202615
  • Easy
  • Medium
  • Hard

What it asks you to do

SHARE OF QUESTIONS
  • Calculation61%
  • Conceptual14%
  • Multi-step9%
  • Application7%
  • Recall4%
  • Data or graph4%

Coverage

How much of the chapter JEE Main has used

We split the chapter into 152 ideas. In the 108 shifts analysed, JEE Main built a question around 46 of them. Most of the chapter has never been the main idea of a question, so past questions alone leave most of it out.

Asked as the main idea
46
Touched on in a question
14
Never asked
92

Topics

What repeats, topic by topic

This chapter's questions per topic in each year's analysed shifts. The number is the count; the shade is scaled to one shift, so a year with more analysed shifts (1 to 24 a year) does not look darker. 8 questions had no close topic in Lumi's map and count for the chapter only.

’17’20’21’22’23’24’25’26
011+questions in that year’s analysed shifts, shaded per shift
  • Chemical Equilibrium

    As a topic: 48 questions in 7 of 8 years, most often numerical value, 50% numerical answer. Recent asks: equilibrium constant from combined reactions; numerical: partial pressure from coupled equilibria; numerical: partial pressure from Kc and inert gas.

  • pH and Buffers

    As a topic: 45 questions in 8 of 8 years, most often numerical value, 51% numerical answer.

  • Solubility Product

    As a topic: 25 questions in 7 of 8 years, most often single correct, 44% numerical answer.

  • Gibbs Free Energy

    As a topic: 29 questions in 6 of 8 years, most often numerical value, 66% numerical answer.

Drill down

Topic, idea, question

Open a topic to see every idea JEE Main tested inside it, then open an idea to read the questions. Each row shows its 8 years.

  • Open46 · 36%5895856

    15 ideas inside

    • OpenRepeated9 · 20%2322
    • OpenRepeated5 · 11%2
    • OpenRepeated4 · 9%2
    • OpenRepeated4 · 9%22
    • OpenRepeated4 · 9%3
    • OpenRepeated4 · 9%
    • OpenRepeated3 · 7%
    • OpenRepeated3 · 7%
    • OpenRepeated2 · 4%
    • OpenRepeated2 · 4%
    • OpenRepeated2 · 4%
    • Open1 · 2%
    • Open1 · 2%
    • Open1 · 2%
    • Open1 · 2%
  • Open42 · 33%311114435
  • Open25 · 20%474342
  • Open3 · 2%2
  • Open1 · 1%
  • Open1 · 1%
  • Open1 · 1%

Squares are the 8 years with analysed shifts, 2017 to 2026. A number is the questions that year when there is more than one; the shade is scaled to one shift, so a year with more analysed shifts (1 to 24 a year) does not look darker. Share is of the level above.

Ideas

The exact ideas JEE Main has asked

Inside the topics, 44 different ideas were tested; 26 came more than once. These are the repeats, then the ideas new since 2024.

Dots are the 8 years with analysed shifts, 2017 to 2026.

Every question

All 127 Equilibrium questions

Newest first, shift by shift. The newest 40 show their opening words; older ones name the idea they tested. Each opens with its options and the official answer.

JEE Main 202615 questions

  1. 2 Apr 2026, Shift 1 · Q56The solubility product constants of Ag2CrO4\mathrm{Ag_2CrO_4} and AgBr are 32x32x and 4y4y respectively at 298298 K. The value of…MediumSingle correct
  2. 2 Apr 2026, Shift 2 · Q52The first and second ionization constants of a weak dibasic acid H2A\mathrm{H_2A} are 8.1×10−88.1 \times 10^{-8} and 1.0×10−131.0 \times 10^{-13}…HardSingle correct
  3. 2 Apr 2026, Shift 2 · Q56At 25°C, 20.0 mL of 0.2 M weak monoprotic acid HX is titrated against 0.2 M NaOH. The pH of the solution (a) at the start of the titration…MediumSingle correct
  4. 2 Apr 2026, Shift 2 · Q72Consider the following gas phase reaction being carried out in a closed vessel at 25°C. 2A(g)⟶4B(g)+C(g)2A(g) \longrightarrow 4B(g) + C(g) | time (min)…MediumNumerical value
  5. 4 Apr 2026, Shift 1 · Q55At T(K), the equilibrium constant of A2(g)+B2(g)⇌C(g)\mathrm{A_2}(g)+\mathrm{B_2}(g)\rightleftharpoons \mathrm{C}(g) is 2.7×10−52.7\times10^{-5}. What is the…EasySingle correct
  6. 4 Apr 2026, Shift 1 · Q74The pH of a solution obtained by mixing 55 mL of 0.10.1 M NH4OH\mathrm{NH_4OH} solution with 250250 mL of 0.10.1 M NH4Cl\mathrm{NH_4Cl} solution…MediumNumerical value
  7. 4 Apr 2026, Shift 2 · Q5520 mL of a solution of acetic acid required 28.4 mL of 0.1 M NaOH for its neutralization. A solution (X) was prepared by mixing 20 mL of…EasySingle correct
  8. 4 Apr 2026, Shift 2 · Q69Among Fe3+\mathrm{Fe^{3+}}, Pb2+\mathrm{Pb^{2+}}, Cu2+\mathrm{Cu^{2+}} and Mn2+\mathrm{Mn^{2+}}, identify the one that gets precipitated out while…MediumSingle correct
  9. 5 Apr 2026, Shift 1 · Q55M3A2\mathrm{M_3A_2} is a sparingly soluble salt of molar mass yy g mol−1^{-1} and solubility xx g L−1^{-1}. The ratio of the molar…MediumSingle correct
  10. 5 Apr 2026, Shift 1 · Q56Arrange the following resultant mixtures in increasing order of their pH values A. 10 mL 0.2 M Ca(OH)2\mathrm{Ca(OH)_2} + 25 mL 0.1 M HCl B. 10…MediumOther
  11. 5 Apr 2026, Shift 2 · Q56The reaction A(g)⇌B(g)+C(g)\mathrm{A(g)\rightleftharpoons B(g)+C(g)} was initiated with the amount 'a' of A(g). At equilibrium it is found that the…MediumSingle correct
  12. 6 Apr 2026, Shift 1 · Q57One mole each of He and A(g) are taken in a 10 L closed flask and heated to 400 K to establish the following equilibrium.…MediumSingle correct
  13. 6 Apr 2026, Shift 2 · Q74In a closed flask at 600 K, one mole of X2Y4(g)\mathrm{X_2Y_4(g)} attains equilibrium as given below :…MediumNumerical value
  14. 8 Apr 2026, Shift 2 · Q55Consider the following reactions in which all the reactants and products are present in gaseous state 2 xy⇌x2+y22\,xy \rightleftharpoons x_2 + y_2…MediumSingle correct
  15. 8 Apr 2026, Shift 2 · Q75Solid carbon, CaO and CaCO3\mathrm{CaCO_3} are mixed and allowed to attain equilibrium at T K.…MediumNumerical value

JEE Main 20259 questions

  1. 2 Apr 2025, Shift 1 · Q56If equal volumes of AB2\mathrm{AB_2} and XY (both are salts) aqueous solutions are mixed, which of the following combination will give a…MediumSingle correct
  2. 2 Apr 2025, Shift 1 · Q73Consider the following equilibrium, CO(g)+2H2(g)⇌CH3OH(g)\mathrm{CO(g)+2H_2(g)\rightleftharpoons CH_3OH(g)} 0.1 mol of CO along with a catalyst is present in…MediumNumerical value
  3. 2 Apr 2025, Shift 2 · Q55Consider the following chemical equilibrium of the gas phase reaction at a constant temperature :…MediumSingle correct
  4. 3 Apr 2025, Shift 1 · Q55In the following system, PCl5(g)⇌PCl3(g)+Cl2(g)\mathrm{PCl_5(g)} \rightleftharpoons \mathrm{PCl_3(g)} + \mathrm{Cl_2(g)} at equilibrium, upon addition of…EasySingle correct
  5. 3 Apr 2025, Shift 1 · Q57Given below are two statements: Statement I : A catalyst cannot alter the equilibrium constant (Kc\mathrm{K_c}) of the reaction,…EasyTwo statements
  6. 4 Apr 2025, Shift 2 · Q71x mg of Mg(OH)2\mathrm{Mg(OH)_2} (molar mass = 58) is required to be dissolved in 1.0 L of water to produce a pH of 10.0 at 298 K. The value of…EasyNumerical value
  7. 7 Apr 2025, Shift 1 · Q54An aqueous solution of HCl with pH 1.0 is diluted by adding equal volume of water (ignoring dissociation of water). The pH of HCl solution…EasySingle correct
  8. 7 Apr 2025, Shift 2 · Q72One litre buffer solution was prepared by adding 0.10 mol each of NH3\mathrm{NH_3} and NH4Cl\mathrm{NH_4Cl} in deionised water. The change in…MediumNumerical value
  9. 8 Apr 2025, Shift 2 · Q74The equilibrium constant for decomposition of H2O\mathrm{H_2O} (g) H2O(g)⇌H2(g)+12O2(g)\mathrm{H_2O(g) \rightleftharpoons H_2(g) + \frac{1}{2}O_2(g)}…MediumNumerical value

JEE Main 202418 questions

  1. 4 Apr 2024, Shift 2 · Q63The equilibrium constant for the reaction SO3(g)⇌SO2(g)+12O2(g)\mathrm{SO_3(g) \rightleftharpoons SO_2(g) + \frac{1}{2}O_2(g)} is…EasySingle correct
  2. 5 Apr 2024, Shift 1 · Q63The following reaction occurs in the Blast furnace where iron ore is reduced to iron metal…EasySingle correct
  3. 5 Apr 2024, Shift 2 · Q63Given below are two statements : Statement I : On passing HCl(g)\mathrm{HCl_{(g)}} through a saturated solution of BaCl2\mathrm{BaCl_2}, at room…MediumTwo statements
  4. 5 Apr 2024, Shift 2 · Q72While preparing crystals of Mohr's salt, dil H2SO4\mathrm{H_2SO_4} is added to a mixture of ferrous sulphate and ammonium sulphate, before…EasySingle correct
  5. 6 Apr 2024, Shift 1 · Q63At −20-20 °C and 1 atm pressure, a cylinder is filled with equal number of H2\mathrm{H_2}, I2\mathrm{I_2} and HI molecules for the reaction…MediumSingle correct
  6. 6 Apr 2024, Shift 2 · Q63The ratio KPKC\frac{K_P}{K_C} for the reaction : CO(g)+12O2(g)⇌CO2(g)\mathrm{CO_{(g)}+\frac{1}{2}O_{2(g)}\rightleftharpoons CO_{2(g)}} is :EasySingle correct
  7. 8 Apr 2024, Shift 1 · Q63For the given hypothetical reactions, the equilibrium constants are as follows : X⇌Y\mathrm{X\rightleftharpoons Y}; K1=1.0K_1=1.0…EasySingle correct
  8. 8 Apr 2024, Shift 2 · Q62Given below are two statements : Statement (I) : A Buffer solution is the mixture of a salt and an acid or a base mixed in any particular…EasyTwo statements
  9. 8 Apr 2024, Shift 2 · Q68The equilibrium Cr2O72−⇌2CrO42−\mathrm{Cr_2O_7^{2-} \rightleftharpoons 2CrO_4^{2-}} is shifted to the right in :EasySingle correct
  10. 9 Apr 2024, Shift 2 · Q63For a sparingly soluble salt AB2\mathrm{AB_2}, the equilibrium concentrations of A2+\mathrm{A^{2+}} ions and B−\mathrm{B^-} ions are…EasySingle correct
  11. 1 Feb 2024, Shift 1 · Q83Ka\mathrm{K_a} for CH3COOH\mathrm{CH_3COOH} is 1.8×10−51.8\times10^{-5} and Kb\mathrm{K_b} for NH4OH\mathrm{NH_4OH} is 1.8×10−51.8\times10^{-5}. The pH of…EasyNumerical value
  12. 1 Feb 2024, Shift 2 · Q64Solubility of calcium phosphate (molecular mass, M) in water is Wg\mathrm{W_g} per 100 mL at 25 ∘^\circC. Its solubility product at 25…MediumSingle correct
  13. 27 Jan 2024, Shift 1 · Q63Given below are two statements : Statement (I) : Aqueous solution of ammonium carbonate is basic. Statement (II) : Acidic/basic nature of…EasyTwo statements
  14. 29 Jan 2024, Shift 1 · Q85For the reaction N2O4(g)⇌2NO2(g)\mathrm{N_2O_{4(g)} \rightleftharpoons 2NO_{2(g)}}, Kp\mathrm{K_p}= 0.492 atm at 300K. Kc\mathrm{K_c} for the reaction…EasyNumerical value
  15. 30 Jan 2024, Shift 1 · Q84The pH at which Mg(OH)2\mathrm{Mg(OH)_2} [Ksp=1×10−11K_{sp} = 1\times10^{-11}] begins to precipitate from a solution containing 0.10 M…EasyNumerical value
  16. 30 Jan 2024, Shift 2 · Q83The pH of an aqueous solution containing 1M benzoic acid (pKa=4.20\mathrm{pK_a} = 4.20) and 1M sodium benzoate is 4.5. The volume of benzoic…MediumNumerical value
  17. 31 Jan 2024, Shift 1 · Q63Kc Expression · Easy · Single correct
  18. 31 Jan 2024, Shift 2 · Q64Kp for PCl5 Dissociation Type Reactions · Medium · Single correct

JEE Main 202314 questions

  1. 6 Apr 2023, Shift 1 · Q62Degree of Dissociation · Medium · Single correct
  2. 6 Apr 2023, Shift 2 · Q85Le Chatelier's Principle · Medium · Numerical value
  3. 8 Apr 2023, Shift 1 · Q86pH of Acid-Base Indicators · Medium · Numerical value · has a figure
  4. 8 Apr 2023, Shift 2 · Q79Open the question · Medium · Two statements
  5. 8 Apr 2023, Shift 2 · Q85Common Ion Effect · Easy · Numerical value
  6. 10 Apr 2023, Shift 1 · Q85Open the question · Medium · Numerical value
  7. 10 Apr 2023, Shift 2 · Q85Dalton's Law in Kp Calculations · Medium · Numerical value
  8. 11 Apr 2023, Shift 1 · Q63Precipitation Condition · Medium · Single correct
  9. 11 Apr 2023, Shift 1 · Q85Degree of Dissociation · Medium · Numerical value
  10. 11 Apr 2023, Shift 2 · Q85ICE Table Construction · Easy · Numerical value
  11. 12 Apr 2023, Shift 1 · Q85pH of Strong Acids and Bases · Easy · Numerical value
  12. 13 Apr 2023, Shift 1 · Q85Precipitation Condition · Medium · Numerical value
  13. 13 Apr 2023, Shift 2 · Q85Buffer Formation via Partial Neutralization · Medium · Numerical value
  14. 15 Apr 2023, Shift 1 · Q64pH of Extremely Dilute Strong Acids/Bases · Medium · Other

JEE Main 202227 questions

  1. 25 Jul 2022, Shift 1 · Q64pH of Salt Solutions · Medium · Single correct
  2. 25 Jul 2022, Shift 2 · Q63Equilibrium Constant for Modified Equations · Medium · Single correct
  3. 25 Jul 2022, Shift 2 · Q80Predicting Indicator Color · Medium · Single correct
  4. 26 Jul 2022, Shift 1 · Q86Equilibrium Constant for Modified Equations · Medium · Numerical value
  5. 26 Jul 2022, Shift 2 · Q63Basic Buffer pH Calculation · Medium · Single correct
  6. 26 Jul 2022, Shift 2 · Q80Predicting Indicator Color · Medium · Assertion–reason
  7. 27 Jul 2022, Shift 1 · Q86Solubility-Ksp Relationship · Easy · Numerical value
  8. 27 Jul 2022, Shift 2 · Q63Open the question · Medium · Diagram based · has a figure
  9. 28 Jul 2022, Shift 1 · Q85pH of Weak Acids and Bases · Easy · Numerical value
  10. 28 Jul 2022, Shift 2 · Q55Kp Expression via Partial Pressures · Medium · Numerical value
  11. 29 Jul 2022, Shift 1 · Q86Solubility-Ksp Relationship · Easy · Numerical value
  12. 29 Jul 2022, Shift 2 · Q64pH of Mixed Strong Acids · Medium · Single correct
  13. 29 Jul 2022, Shift 2 · Q80Acid-Base Indicator Transition Range · Easy · Single correct
  14. 30 Jul 2022, Shift 2 · Q54Acidic Buffer pH Calculation · Medium · Numerical value
  15. 24 Jun 2022, Shift 1 · Q64Degree of Dissociation · Medium · Single correct
  16. 24 Jun 2022, Shift 2 · Q83Kp Expression via Partial Pressures · Hard · Numerical value
  17. 25 Jun 2022, Shift 1 · Q86Standard Gibbs Free Energy and Equilibrium Constant · Medium · Numerical value
  18. 25 Jun 2022, Shift 2 · Q64Solubility-Ksp Relationship · Medium · Single correct
  19. 25 Jun 2022, Shift 2 · Q68Open the question · Medium · Assertion–reason
  20. 26 Jun 2022, Shift 1 · Q83pH at Titration Half-Equivalence Point · Easy · Numerical value
  21. 26 Jun 2022, Shift 2 · Q86Gibbs Energy and Equil · Medium · Numerical value
  22. 27 Jun 2022, Shift 1 · Q84ICE Table Construction · Medium · Numerical value
  23. 27 Jun 2022, Shift 2 · Q86pH of Strong Acids and Bases · Easy · Numerical value
  24. 28 Jun 2022, Shift 2 · Q64Acidic Buffer pH Calculation · Medium · Single correct
  25. 29 Jun 2022, Shift 1 · Q64Common Ion Effect · Easy · Single correct
  26. 29 Jun 2022, Shift 2 · Q64Kp Expression via Partial Pressures · Medium · Single correct
  27. 30 Jun 2022, Shift 1 · Q64Equilibrium Constant for Modified Equations · Easy · Single correct

JEE Main 202129 questions

  1. 3 Aug 2021, Shift 1 · Q55pH of Weak Acids and Bases · Hard · Numerical value
  2. 3 Aug 2021, Shift 2 · Q55Buffer Formation via Partial Neutralization · Medium · Numerical value
  3. 4 Aug 2021, Shift 1 · Q55Common Ion Effect · Medium · Numerical value
  4. 4 Aug 2021, Shift 2 · Q57pH of Strong Acids and Bases · Medium · Numerical value
  5. 26 Aug 2021, Shift 1 · Q50Indicator Selection for Titrations · Medium · Two statements
  6. 26 Aug 2021, Shift 1 · Q55Basic Buffer pH Calculation · Medium · Numerical value
  7. 26 Aug 2021, Shift 2 · Q55ICE Table Construction · Medium · Numerical value
  8. 27 Aug 2021, Shift 1 · Q54Complexation Effect on Solubility · Hard · Numerical value
  9. 27 Aug 2021, Shift 2 · Q57Heterogeneous Equilibrium · Medium · Numerical value
  10. 31 Aug 2021, Shift 1 · Q54Solubility-Ksp Relationship · Medium · Numerical value
  11. 31 Aug 2021, Shift 1 · Q60Open the question · Hard · Numerical value
  12. 31 Aug 2021, Shift 2 · Q56pH of Strong Acids and Bases · Easy · Numerical value
  13. 24 Feb 2021, Shift 1 · Q54Delta G vs Delta G-degree at Equilibrium · Medium · Numerical value
  14. 24 Feb 2021, Shift 1 · Q56Kp for PCl5 Dissociation Type Reactions · Medium · Numerical value
  15. 24 Feb 2021, Shift 2 · Q53Gibbs Energy and Equil · Medium · Numerical value
  16. 24 Feb 2021, Shift 2 · Q55Common Ion Effect · Medium · Numerical value
  17. 25 Feb 2021, Shift 1 · Q33pH Effect on Solubility · Hard · Single correct
  18. 25 Feb 2021, Shift 2 · Q32Solubility-Ksp Relationship · Medium · Single correct
  19. 26 Feb 2021, Shift 1 · Q55Degree of Dissociation · Medium · Numerical value
  20. 26 Feb 2021, Shift 2 · Q56pH of Weak Acid-Weak Base Salts · Hard · Numerical value
  21. 22 Jul 2021, Shift 2 · Q55Kc and Kp Relationship · Easy · Numerical value
  22. 25 Jul 2021, Shift 1 · Q57ICE Table Construction · Medium · Numerical value
  23. 25 Jul 2021, Shift 2 · Q56pH of Strong Acids and Bases · Easy · Numerical value
  24. 16 Mar 2021, Shift 2 · Q56pH of Polyprotic Acids · Medium · Numerical value
  25. 17 Mar 2021, Shift 1 · Q56Common Ion Effect on Weak Acid pH · Medium · Numerical value
  26. 17 Mar 2021, Shift 2 · Q55Kc and Kp Relationship · Easy · Numerical value
  27. 18 Mar 2021, Shift 1 · Q55Acidic Buffer pH Calculation · Easy · Numerical value
  28. 18 Mar 2021, Shift 2 · Q53Standard Gibbs Free Energy and Equilibrium Constant · Medium · Numerical value
  29. 18 Mar 2021, Shift 2 · Q55Common Ion Effect · Medium · Numerical value

JEE Main 202014 questions

  1. 8 Jan 2020, Shift 1 · Q26Ksp Expression Writing · Hard · Single correct · has a figure
  2. 8 Jan 2020, Shift 2 · Q28Temperature Dependence of Kw and Neutral pH · Medium · Assertion–reason
  3. 9 Jan 2020, Shift 1 · Q30Precipitation Condition · Medium · Single correct
  4. 9 Jan 2020, Shift 2 · Q27Solubility-Ksp Relationship · Medium · Single correct
  5. 9 Jan 2020, Shift 2 · Q30Kc Expression · Easy · Single correct · has a figure
  6. 2 Sep 2020, Shift 1 · Q27Open the question · Medium · Assertion–reason
  7. 2 Sep 2020, Shift 2 · Q34Open the question · Easy · Single correct
  8. 3 Sep 2020, Shift 1 · Q30Buffer Formation via Partial Neutralization · Medium · Single correct
  9. 3 Sep 2020, Shift 2 · Q27pH of Strong Acid and Strong Base Mixtures · Medium · Diagram based · has a figure
  10. 4 Sep 2020, Shift 1 · Q28Rate-Time Graph Analysis · Easy · Diagram based · has a figure
  11. 4 Sep 2020, Shift 2 · Q28Equilibrium Constant for Modified Equations · Easy · Single correct
  12. 5 Sep 2020, Shift 1 · Q43Le Chatelier's Principle · Medium · Other
  13. 6 Sep 2020, Shift 2 · Q44Equilibrium Constant for Modified Equations · Easy · Single correct
  14. 6 Sep 2020, Shift 2 · Q47General Ksp Formula for AxBy Salts · Easy · Numerical value

JEE Main 20171 question

  1. 2 Apr 2017 (offline) · Q40pH of Weak Acid-Weak Base Salts · Easy · Single correct

Questions from the official JEE Main papers published by NTA. Chapter, topic and idea tags, counts and notes are Lumi’s. Pattern: Asked most years.

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