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MHT CET202619 April 2026Evening ShiftChemistryHaloalkanes and HaloarenesActual

Identify the product B in following reaction. CH ₃ Br KCN A [ C ₂ H ₅ OH ] Na B

Options

  1. AEthane
  2. BEthanamine
  3. CEthanol
  4. DMethanol

Correct answer

B. Ethanamine

Step-by-step solution

The reaction of methyl bromide ( CH ₃ Br ) with potassium cyanide ( KCN ) is a nucleophilic substitution reaction which yields ethanenitrile ( CH ₃ CN ) as the major product A. CH ₃ Br + KCN CH ₃ CN + KBr The reduction of ethanenitrile ( CH ₃ CN ) with sodium and ethanol ( Na / C ₂ H ₅ OH ) is known as the Mendius reduction. It reduces the nitrile group to a primary amine, yielding ethanamine ( CH ₃ CH ₂ NH ₂ ) as product B. CH ₃ CN + 4[ H ] Na / C ₂ H ₅ OH CH ₃ CH ₂ NH ₂ Answer: Ethanamine

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