How is heavy water prepared? Compare its physical properties with those of ordinary water.

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1. AHeavy water is prepared by the electrolysis of water. It has a higher boiling point and higher density compare
2. BHeavy water is prepared by the fractional distillation of water. It has a lower boiling point and lower densit
3. CHeavy water is prepared by the Girdler sulfide process. It has a higher boiling point and higher density compa
4. DHeavy water is prepared by the reaction of hydrogen sulfide with water. It has a lower boiling point and lower