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Ethane-1,2-diol reacts with periodic acid . The organic product is

  1. Aethanal
  2. Bmethanal
  3. Cethanedial
  4. Dmethanoic acid

Answer: B

Periodic acid cleaves the C-C bond between two carbons bearing OH groups. Each carbon of ethane-1,2-diol is a CH2OH carbon, so each becomes HCHO, and two molecules of methanal are formed.
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