What is the IUPAC name of the organic compound formed in the following chemical reaction ? Acetone →((i) C2H5MgBr, dry Ether) Product

NEET UG 2021 · Chemistry · Question 66

NEET 2021 Chemistry, question 66

Question 66 of the NEET 2021 paper (code O1) is a Chemistry question from Aldehydes, Ketones and Carboxylic Acids. Its idea, Grignard Addition to Carbonyls, was asked twice, in 2021 and 2025, across NEET 2017–2026. The NTA final answer key gives option 2.

Updated 2026-10-08

Q66 · Chemistry

\mathrm{Acetone \xrightarrow[(ii)\ H_2O,\ H^{+}]{(i)\ C_2H_5MgBr,\ dry\ Ether} Product}

1 pentan-3-ol 2 2-methyl butan-2-ol Official answer 3 2-methyl propan-2-ol 4 pentan-2-ol

Official answer: option 2 · NTA final answer key

Same idea

Grignard Addition to Carbonyls, in other papers

NEET asked this idea twice, in 2021 and 2025. The other question below.

C_6H_5COCH_2CH_2CN \xrightarrow{\text{(i) CH}_3\text{MgBr (excess); (ii) H}_3\text{O}^+}

Grignard Addition to Carbonyls: 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 analysis Study this chapter Practise this chapter

Grignard Addition to Carbonyls, in other papers

Aldehydes, Ketones and Carboxylic Acids in ten years of NEET

Aldehydes, Ketones and Carboxylic Acids: questions per paper