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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyCalculation

JEE Main 26 June 2022, Shift 1, Chemistry Q61

Question 61 of 90 in this shift, Chemistry question 1 of 30, Section A.

A commercially sold conc. HCl is 35% HCl by mass. If the density of this commercial acid is 1.46 g/mL, the molarity of this solution is : (Atomic mass : Cl=35.5 amu, H=1 amu)
  1. (1)10.2 M
  2. (2)12.5 M
  3. (3)14.0 MOfficial answer
  4. (4)18.2 M

Official answer

Option 3

NTA final key.

Same idea in other shifts

Asked 16× in all
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  3. 30 Jan 2024, Shift 1 · Q81The mass of sodium acetate (CH3COONa\mathrm{CH_3COONa}) required to prepare 250 mL of 0.35 M aqueous solution is ________ g. (Molar mass of…EasyNumerical value
  4. 10 Apr 2023, Shift 2 · Q80Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : 3.1500g of hydrated…EasyAssertion–reason
  5. 26 Jul 2022, Shift 1 · Q85When 800 mL of 0.5 M nitric acid is heated in a beaker, its volume is reduced to half and 11.5 g of nitric acid is evaporated. The…MediumNumerical value
  6. 4 Aug 2021, Shift 1 · Q51A solution of H2SO4\mathrm{H_2SO_4} has 30% H2SO4\mathrm{H_2SO_4} by mass and a density of 1.25 g mL−1^{-1}. The molarity of the solution is…EasyNumerical value
  7. 26 Aug 2021, Shift 2 · Q51100 mL of Na3PO4\mathrm{Na_3PO_4} solution contains 3.45 g of sodium. The molarity of the solution is __________ ×10−2\times 10^{-2} mol…MediumNumerical value
  8. 31 Aug 2021, Shift 1 · Q51The molarity of the solution prepared by dissolving 6.3 g of oxalic acid (H2C2O4⋅2H2O\mathrm{H_2C_2O_4\cdot 2H_2O}) in 250 mL of water in mol…EasyNumerical value

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.