NEET UG 2018 · Chemistry · Question 57
NEET 2018 Chemistry, question 57
Question 57 of the NEET 2018 paper (code AA) 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 CBSE official answer key gives option 1.
Updated 2026-10-08
Q57 · Chemistry
A mixture of 2.3 g formic acid and 4.5 g oxalic acid is treated with conc. . The evolved gaseous mixture is passed through KOH pellets. Weight (in g) of the remaining product at STP will be
- 12.8Official answer
- 23.0
- 31.4
- 44.4
Official answer: option 1 · CBSE official 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
- 2022 Q76What mass of 95% pure will be required to neutralise 50 mL of 0.5 M HCl solution according to the following reaction ?…Numerical · Medium
- 2019 Q68The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber's process is :Numerical · Easy
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.