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JEE Main levelSingle correct optionDifficulty 2 of 3ap153

Which of the following diols does NOT react with periodic acid, ?

  1. Aethane-1,2-diol
  2. Bpropane-1,2-diol
  3. Cpropane-1,2,3-triol
  4. Dbutane-1,3-diol

Answer: D

Periodic acid cleaves the bond between two adjacent carbons each bearing an group (vicinal diols). In butane-1,3-diol the hydroxyl groups are on carbons 1 and 3, which are not adjacent, so no cleavage occurs.
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