Question

Some statements about heavy water are given below.
(i) Heavy water is used as moderator in nuclear reactors.
(ii) Heavy water is more associated than ordinary water.
(iii) Heavy water is more effective solvent than ordinary water.
Which of the above statements are correct?

• A. (ii) and (iii)
• B. (i), (ii) and (iii)
• C. (i) and (iii)
• D. (i) and (ii)

Answer 1

The correct option is D (i) and (ii)

In nuclear reactors heavy water is used as a moderator. It has higher boiling point as compared to the ordinary water. Thus, it is more associated as compared to ordinary water. The dielectric constant is however higher for $H_{2}O$, thus, $H_{2}O$ is a more effective solvent as compared to heavy water $D_{2}O$.