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Friday, 9 October

NEET UG 2022 · Chemistry · Question 64

NEET 2022 Chemistry, question 64

Question 64 of the NEET 2022 paper (code R1) is a Chemistry question from Aldehydes, Ketones and Carboxylic Acids. Its idea, Grignard Carboxylation, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 2.

Updated 2026-10-08

Q64 · Chemistry

RMgX+CO2→dry etherY→H3O+RCOOH\mathrm{RMgX + CO_2 \xrightarrow{dry\ ether} Y \xrightarrow{H_3O^+} RCOOH}

What is Y in the above reaction ?

  1. 1(RCOO)2Mg\mathrm{(RCOO)_2Mg}
  2. 2RCOO−Mg+X\mathrm{RCOO^-Mg^+X}Official answer
  3. 3R3CO−Mg+X\mathrm{R_3CO^-Mg^+X}
  4. 4RCOO−X+\mathrm{RCOO^-X^+}

Official answer: option 2 · NTA final answer key

Same idea

The only question on Grignard Carboxylation

No other NEET paper from 2017–2026 tested this exact idea.

Grignard Carboxylation: every question and how it was framed

The chapter

Aldehydes, Ketones and Carboxylic Acids in ten years of NEET

27 questions from 2017–2026, asked in 10 of 10 papers, about 2.6 a paper. Aldehydes, Ketones and Carboxylic Acids alone had 22.

Chapter analysisStudy this chapterPractise this chapter

Aldehydes, Ketones and Carboxylic Acids: questions per paper

0242’171’181’192’204’214’223’234’243’253’26