Question

Since $D_{2}O$ is similar to water, it is safe to drink on a daily basis - True or False?

• A. True
• B. False

Answer 1

The correct option is B

False

We know that $D_{2}O$ is heavier than $H_{2}O$ and hence at a molecular level, using heavy water alters the rate of many critical biochemical reactions and phenomena - like mitosis and cell division. Hence $D_{2}O$ is actually toxic despite being chemically similar to $H_{2}O$