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Saturday, 31 October

JEE Main 2026 · ChemistryMultiple choiceSingle correctMediumCalculation

JEE Main 5 April 2026, Shift 1, Chemistry Q55

Question 55 of 75 in this shift, Chemistry question 5 of 25, Section A.

M3A2\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 concentration of the anion (A3−\mathrm{A^{3-}}) to the solubility product of the salt is
  1. (1)154⋅y4x4\frac{1}{54}\cdot\frac{y^4}{x^4}Official answer
  2. (2)y5108x4\frac{y^5}{108x^4}
  3. (3)108⋅x5y5108\cdot\frac{x^5}{y^5}
  4. (4)1108y4x4\frac{1}{108}\frac{y^4}{x^4}

Official answer

Option 1

NTA final key.

Same idea in other shifts

Asked 8× in all
  1. 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
  2. 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
  3. 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
  4. 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
  5. 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
  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. 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

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.