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Saturday, 31 October

JEE Main · Chemistry · Equilibrium

Solubility-Ksp Relationship

JEE Main asked Solubility-Ksp Relationship 8 times in 8 of the 108 shifts Lumi analysed, in 2020, 2021, 2022, 2024 and 2026. It belongs to Solubility Product, in Equilibrium (Chemistry). The longest wait between two years asking it was 2 years. In 2021 and 2022 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
8
in 8 shifts
Years
5 of 8
First asked
2020
last in 2026
Pattern
Asked most years
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2021, 2022, 2024 and 2026. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.10.20’170.08’200.07’210.10’220’230.05’240’250.11’26

Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 2 in 24 shifts · 2022: 3 in 24 shifts · 2023: 0 in 12 shifts · 2024: 1 in 18 shifts · 2025: 0 in 8 shifts · 2026: 1 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20261 of 9
  • 20250 of 8
  • 20241 of 18
  • 20230 of 12
  • 20223 of 24
  • 20212 of 24
  • 20201 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Single correct is the usual form. Skill tested: calculation.

  • Expression for ratio from solubility in g/l
  • Expression of ion concentration from ksp

Difficulty

Easy 2Medium 6Hard 0

3 of the 8 questions had a numerical answer.

Every question

All 8 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 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
  2. 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
  3. 25 Jun 2022, Shift 2 · Q64The Ksp\mathrm{K_{sp}} for bismuth sulphide (Bi2S3\mathrm{Bi_2S_3}) is 1.08×10−731.08 \times 10^{-73}. The solubility of Bi2S3\mathrm{Bi_2S_3} in…MediumSingle correct
  4. 29 Jul 2022, Shift 1 · Q86If the solubility product of PbS is 8×10−288\times10^{-28}, then the solubility of PbS in pure water at 298 K is x×10−16x\times10^{-16}…EasyNumerical value
  5. 27 Jul 2022, Shift 1 · Q86At 310 K, the solubility of CaF2\mathrm{CaF_2} in water is 2.34×10−32.34 \times 10^{-3} g/100 mL. The solubility product of CaF2\mathrm{CaF_2} is…EasyNumerical value
  6. 25 Feb 2021, Shift 2 · Q32The solubility of Ca(OH)2\mathrm{Ca(OH)_2} in water is : [Given : The solubility product of Ca(OH)2\mathrm{Ca(OH)_2} in water =5.5×10−6=5.5\times10^{-6}]MediumSingle correct
  7. 31 Aug 2021, Shift 1 · Q54A3B2\mathrm{A_3B_2} is a sparingly soluble salt of molar mass M (g mol−1\mathrm{g\,mol^{-1}}) and solubility xx g L−1\mathrm{L^{-1}}. The…MediumNumerical value
  8. 9 Jan 2020, Shift 2 · Q27The solubility product of Cr(OH)3\mathrm{Cr(OH)_3} at 298 K is 6.0×10−316.0\times10^{-31}. The concentration of hydroxide ions in a saturated solution…MediumSingle correct

Shifts: 9 Jan 2020, Shift 2, 25 Feb 2021, Shift 2, 31 Aug 2021, Shift 1, 25 Jun 2022, Shift 2, 27 Jul 2022, Shift 1, 29 Jul 2022, Shift 1, 1 Feb 2024, Shift 2, 5 Apr 2026, Shift 1.

Same topic

Other ideas in Solubility Product

Solubility Product has 7 ideas JEE Main has asked; 5 of them came up in more than one question.

Topic analysisChapter analysisStudy this chapterAll repeated ideas