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Ethanol is heated with excess conc. at 443 K. The main product is:

  1. Adiethyl ether
  2. Bethanal
  3. Cethane
  4. Dethene

Answer: D

With excess acid at 443 K, protonated ethanol loses water and a beta proton to form ethene. Diethyl ether forms at about 413 K when alcohol is in excess.
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