Q47.Among the following structures, which will show the most stable enamine formation? (Where Me is −CH3 ) JEE Main 2022 (26 Jun Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)
What This Question Tests
This question tests the understanding of factors affecting the stability of enamine formation, specifically how ring strain and steric hindrance influence the ease of formation and stability.
Concepts Tested
📚 NCERT Sections This Tests
8.5 — Draw Structures Of The Following Derivatives.
Chemistry Class 12 · Chapter 8
8.5 Draw structures of the following derivatives. (i) The 2,4-dinitrophenylhydrazone of benzaldehyde (ii) Cyclopropanone oxime (iii) Acetaldehydedimethylacetal (iv) The semicarbazone of cyclobutanone (v) The ethylene ketal of hexan-3-one (vi) The methyl hemiacetal of formaldehyde 255 Aldehydes, Ketones and Carboxylic Acids Reprint 2025-26
7.8 — Ortho And Para Nitrophenols Are More Acidic Than Phenol. Draw The
Chemistry Class 12 · Chapter 7
7.8 Ortho and para nitrophenols are more acidic than phenol. Draw the resonance structures of the corresponding phenoxide ions.
8.3 — Draw The Structures Of The Following Compounds.
Chemistry Class 12 · Chapter 8
8.3 Draw the structures of the following compounds. (i) 3-Methylbutanal (ii) p-Nitropropiophenone (iii) p-Methylbenzaldehyde (iv) 4-Methylpent-3-en-2-one (v) 4-Chloropentan-2-one (vi) 3-Bromo-4-phenylpentanoic acid (vii) p,p’-Dihydroxybenzophenone (viii) Hex-2-en-4-ynoic acid
📋 Question Details
- Chapter
- Aldehydes Ketones Carboxylic Acids
- Topic
- Enamine formation
- Year
- 2022
- Shift
- 26 Jun Shift 1
- Q Number
- Q47
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 12: Aldehydes Ketones Carboxylic Acids
More from this Chapter
Q80.The increasing order of the rate of HCN addition to compounds A −D is (A) HCHO (B) CH3COCH3 (C) PhCOCH3 (D) PhCOPh (1) A < B < C < D (2) D < B < C < A (3) D < C < B < A (4) C < D < B < A
Q78. In the following sequence of reactions, the compound ' D ' is (1) butanal (2) n−butyl alcohol (3) n−propyl alcohol (4) propanal
Q57.In Cannizzaro reaction qiven below (1) the attack of : OH at the carboxyl group (2) the transfer of hydride to the carbonyl group (3) the abstraction of proton from the carboxylic (4) the deprotonation of PhCH2OH group JEE Main 2009 JEE Main Previous Year Paper
Q58.A liquid was mixed with ethanol and a drop of concentrated H2SO4 was added. A compound with a fruity smell was formed. The liquid was: (1) CH3OH (2) HCHO (3) CH3COCH3 (4) CH3COOH