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Friday, 9 October

NEET UG 2019 · Chemistry · Question 90

NEET 2019 Chemistry, question 90

Question 90 of the NEET 2019 paper (code P1) is a Chemistry question from Amines. Its idea, Aqueous Basicity Order of Methylamines, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 1.

Updated 2026-10-08

Q90 · Chemistry

The correct order of the basic strength of methyl substituted amines in aqueous solution is :

  1. 1(CH3)2NH>CH3NH2>(CH3)3N(CH_3)_2NH > CH_3NH_2 > (CH_3)_3NOfficial answer
  2. 2(CH3)3N>CH3NH2>(CH3)2NH(CH_3)_3N > CH_3NH_2 > (CH_3)_2NH
  3. 3(CH3)3N>(CH3)2NH>CH3NH2(CH_3)_3N > (CH_3)_2NH > CH_3NH_2
  4. 4CH3NH2>(CH3)2NH>(CH3)3NCH_3NH_2 > (CH_3)_2NH > (CH_3)_3N

Official answer: option 1 · NTA final answer key

Same idea

The only question on Aqueous Basicity Order of Methylamines

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

Aqueous Basicity Order of Methylamines: every question and how it was framed

The chapter

Amines in ten years of NEET

18 questions from 2017–2026, asked in 10 of 10 papers, about 1.7 a paper. Amines and Diazonium Salts alone had 18.

Chapter analysisStudy this chapterPractise this chapter

Amines: questions per paper

0242’171’181’191’202’212’222’232’243’252’26