Medicneet Logo
NEET 2023 Phase 2 · ChemistryPrevious Year Question

Which amongst the following compounds will show geometrical isomerism?

Answer: (B) 3,4-Dimethylhex-3-ene. \textbf{Answer:} (b) 3,4-Dimethylhex-3-ene \textbf{Solution:} Geometrical (cis/trans) isomerism requires that each carbon of the C=C double bond bears two different groups.

  1. A.2-Methylprop-1-ene
  2. B.3,4-Dimethylhex-3-ene✓
  3. C.Pent-1-ene
  4. D.2,3-Dimethylbut-2-ene

Correct Answer

(B) 3,4-Dimethylhex-3-ene

Solution & Explanation

\textbf{Answer:} (b) 3,4-Dimethylhex-3-ene \textbf{Solution:} Geometrical (cis/trans) isomerism requires that each carbon of the C=C double bond bears two different groups. In 3,4-dimethylhex-3-ene, , each doubly bonded carbon carries an ethyl and a methyl group (different from each other), so cis and trans forms exist. 2-Methylprop-1-ene and 2,3-dimethylbut-2-ene each have a doubly bonded carbon bearing two identical groups, and pent-1-ene is a terminal alkene , so none of these show geometrical isomerism.

🎯
43,000+ questions in हिंदी & English · one-tap toggle
Practice NEET 2023 Phase 2 Chemistry — free, with instant solutions
The app builds a daily goal from your weak topics and brings each question back just before you forget it — so what you solve today turns into marks on exam day.
📚Practice all NEET Chemistry PYQs chapter-wise →💡Don't get it? Learn the General Principles Of Organic Chemistry concepts →
← Chemistry Q26Chemistry Q28 →

More NEET PYQ solutions

ChemIdentify the suitable reagent for the following conversion: C6H5COOCH3 -> C6H5CHO (methyl benzoate to benzaldehyde)ChemThe correct order of decreasing acidity of the following aliphatic acids isChemThe major product of the following reaction is: 4-oxo-4-phenylbutanenitrile C6H5-CO-CH2-CH2-CN is treated with (i) CH3MgBr (excess) and then (ii) H3O+.ChemOut of the following complex compounds, which compound will have the minimum conductance in solution?ChemWhich of the following are paramagnetic? A. [NiCl4]^2- B. Ni(CO)4 C. [Ni(CN)4]^2- D. [Ni(H2O)6]^2+ E. Ni(PPh3)4ChemThe correct order of the wavelength of light absorbed by the following complexes is: A. [Co(NH3)6]^3+ B. [Co(CN)6]^3- C. [Cu(H2O)4]^2+ D. [Ti(H2O)6]^3+ChemThe correct order of decreasing basic strength of the given amines is: (N-ethylethanamine = (C2H5)2NH; ethanamine = C2H5NH2; N-methylaniline = C6H5NH(CH3); benzenamine/aniline = C6H5NH2)ChemPredict the major product P in the following sequence of reactions. The starting material is 1-methylcyclopent-1-ene: (i) HBr, benzoyl peroxide; (ii) KCN; (iii) Na(Hg)/C2H5OH P (major). The structures of the options (A)-(D) are shown in the image below:
More: All NEET 2023 Phase 2 Chemistry PYQs · NEET Chemistry PYQs · All NEET PYQs · Previous year papers