Question

Heavy water is obtained by.

• A. Boiling water
• B. Heating $H_{2}O_{2}$
• C. Prolonged electrolysis of $H_{2}O$
• D. All of these.

Answer 1

Answer: (C)

Prolonged electrolysis of $H_{2}O$

Answer 2

:$D_{2}O$is prepared by repeated electrolysis of ordinary water which contains a small amount of alkali.