NEET UG 2017 · Chemistry · Question 52
NEET 2017 Chemistry, question 52
Question 52 of the NEET 2017 paper (code A) is a Chemistry question from Aldehydes, Ketones and Carboxylic Acids. Its idea, Aldol Dehydration to Enones, was asked only this once in NEET 2017–2026. The CBSE official answer key gives option 2.
Updated 2026-10-08
Q52 · Chemistry
Of the following, which is the product formed when cyclohexanone undergoes aldol condensation followed by heating ?
The figure, described in words
Options are skeletal structures of bicyclic products (option 2 faintly printed): (1) keto-alcohol, (2) α,β-unsaturated ketone (cyclohexylidene cyclohexanone), (3) cyclohexyl cyclohexanol, (4) diketone with exocyclic C=C.
- 1[structure: 2-(2-hydroxycyclohexyl)cyclohexan-1-one — cyclohexanone ring bonded at C-2 to a cyclohexane ring bearing OH]
- 2[structure: 2-cyclohexylidenecyclohexan-1-one — two cyclohexane rings joined by a C=C, one ring bearing C=O adjacent to the double bond]Official answer
- 3[structure: 2-cyclohexylcyclohexan-1-ol — cyclohexanol ring bonded at C-2 to a cyclohexane ring]
- 4[structure: two cyclohexanone rings joined by a C=C between their C-2 atoms (each ring bearing C=O)]
Official answer: option 2 · CBSE official answer key
Same idea
The only question on Aldol Dehydration to Enones
No other NEET paper from 2017–2026 tested this exact idea.
Aldol Dehydration to Enones: 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. Aldol Condensation alone had 5.