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COMEDK20269 May 2026Evening ShiftChemistryAlcohols Phenols and EthersActual

An unsaturated organic compound (C₃ H₆ ), undergoes the following series of reactions: C ₃ H ₆ dil H₂SO₄ [ B ] ( Major Product ) + HCl / ZnCl₂ [ C ] Na_ (s) / dry ether [ D ] Identify compound [D]

Options

  1. A2,3–dimethylbutane
  2. B2-methyl pentane
  3. CCyclohexane
  4. DHexane

Correct answer

A. 2,3–dimethylbutane

Step-by-step solution

The unsaturated organic compound C ₃ H ₆ is propene, CH ₃- CH = CH ₂ . Hydration of propene with dil. H ₂ SO ₄ follows Markovnikov's rule to give propan-2-ol as the major product [B]. CH ₃- CH = CH ₂ dil. H ₂ SO ₄ CH ₃- CH(OH) - CH ₃ Reaction of propan-2-ol with Lucas reagent ( HCl / ZnCl ₂ ) gives 2-chloropropane [C]. CH ₃- CH(OH) - CH ₃ HCl / ZnCl ₂ CH ₃- CH(Cl) - CH ₃ Wurtz reaction of 2-chloropropane with sodium in dry ether gives 2,3-dimethylbutane [D]. 2 CH ₃- CH(Cl) - CH ₃ Na / dry ether CH ₃- CH(CH ₃)- CH(C

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