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NEET2019ChemistryHaloalkanes and HaloarenesActual

CH ₃- CH ₂- CH ₂- Br Alc. KOH Final product is

Options

  1. Apropene
  2. Bpropanol
  3. Ccyclopropane
  4. Dpropane-1, 2-diol

Correct answer

A. propene

Step-by-step solution

When haloalkane containing -hydrogen atom is heated with alc. KOH solution, then alkene is formed CH ₃ CH ₂ CH ₂ Br alc. KOH CH ₃ - Propene CH = CH ₂ In this reaction, hydrogen is elimated from -carbon and the halogen is lost from -carbon atom. As a result, an alkene is formed as a product. Due to the involvement of elimination of -hydrogen atom, the process is often called -elimination.

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