1.

      Which one of the following is heavy water used in nuclear reactor?    [CDS]

A. Water having molecular weight 18 u
B. Water having molecular weight 20 u
C. Water at \[4{}^\circ C\] but having molecular weight 19u
D. Water below the ice in a frozen sea
Answer» C. Water at \[4{}^\circ C\] but having molecular weight 19u


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