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NEET levelSingle correct optionDifficulty 1 of 3o4075

Bromoethane is treated separately with aqueous and with alcoholic . The main products are, respectively,

  1. Aethene and ethanol
  2. Bethanol and ethene
  3. Cethanol and ethanol
  4. Dethene and ethene

Answer: B

In aqueous , hydroxide is well solvated and acts mainly as a nucleophile, giving substitution to ethanol. In alcoholic , the stronger base ethoxide is present in a less polar solvent, and dehydrohalogenation to ethene is favoured.
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