Question

Knowing the properties of $H_{2}O$ and $D_{2}O$, do you think that $D_{2}O$ can be used for drinking purposes?

Answer 1

Heavy water $\left(D_{2}O\right)$ acts as a moderator, i.e., it slows the rate of a reaction. Due to this property of $D_{2}O$, it cannot be used for drinking purposes because it will slow down anabolic and catabolic reactions taking place in the body and lead to a casualty.