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Question: Which of the following is not true?

Options:

  1.  Ordinary water is electrolyzed more rapidly than D2O
  2.  Reaction between H2 and Cl2 is much faster than D2 and Cl2.
  3.  D2O freezes at lower temperature than H2O
  4.  Bond dissociation energy for D2 is greater than H2

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3. D2O freezes at lower temperature than H2O

D2O freezes at lower temperature than H2O is not true.

T2O freezes at 4.48C while D2O freezes at 3.8C.

H2O freezes at 0 degree C.

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