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Friday, 9 October

NEET UG 2022 · Chemistry · Question 76

NEET 2022 Chemistry, question 76

Question 76 of the NEET 2022 paper (code R1) is a Chemistry question from Some Basic Concepts of Chemistry. Its idea, Stoichiometric Calculations, was asked 5 times, in 2018, 2019, 2022, 2024 and 2026, across NEET 2017–2026. The NTA final answer key gives option 3.

Updated 2026-10-08

Q76 · Chemistry

What mass of 95% pure CaCO3\mathrm{CaCO_3} will be required to neutralise 50 mL of 0.5 M HCl solution according to the following reaction ?

CaCO3(s)+2HCl(aq)→CaCl2(aq)+CO2(g)+2H2O(l)\mathrm{CaCO_{3(s)} + 2HCl_{(aq)} \to CaCl_{2(aq)} + CO_{2(g)} + 2H_2O_{(l)}}

[Calculate upto second place of decimal point]

  1. 19.50 g
  2. 21.25 g
  3. 31.32 gOfficial answer
  4. 43.65 g

Official answer: option 3 · NTA final answer key

Same idea

Stoichiometric Calculations, in other papers

NEET asked this idea 5 times, in 2018, 2019, 2022, 2024 and 2026. The other 4 questions below.

  • 2026 Q63The amount of carbon dioxide evolved upon complete combustion of 116 g of n-butane is (Given: atomic mass in amu H = 1, C = 12 and O = 16)Numerical · Easy
  • 2024 Q651 gram of sodium hydroxide was treated with 25 mL of 0.75 M HCl solution, the mass of sodium hydroxide left unreacted is equal toNumerical · Easy
  • 2019 Q68The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber's process is :Numerical · Easy
  • 2018 Q57A mixture of 2.3 g formic acid and 4.5 g oxalic acid is treated with conc. H2SO4\mathrm{H_2SO_4}. The evolved gaseous mixture is passed…Numerical · Hard

Stoichiometric Calculations: every question and how it was framed

The chapter

Some Basic Concepts of Chemistry in ten years of NEET

14 questions from 2017–2026, asked in 9 of 10 papers, about 1.3 a paper. Mole Concept alone had 14.

Chapter analysisStudy this chapterPractise this chapter

Some Basic Concepts of Chemistry: questions per paper

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