Question

Which of the following is not true.

• A. Ordinary water is electrolysed more rapidly than $D_{2}O$
• B. Reaction between$H_{2}$and$Cl_{2}$is much faster than$D_{2}$and$Cl_{2}$
• C. $D_{2}O$ freezes at lower temperature than $H_{2}O$
• D. Bond dissociation energy for $D_{2}$ is greater than $H_{2}$

Answer 1

Answer: (C)

$D_{2}O$ freezes at lower temperature than $H_{2}O$

Answer 2

$D_{2}O$ actually has higher freezing point (3.8°C) than water $H_{2}O$ (0°C).