NDA2015General AbilityGeneral ScienceActual
Which of the following statements regarding heavy water are correct? 1. It is extensively used as a moderator in nuclear reactors 2. It cannot be used in exchange reaction to study reaction mechanism 3. Viscosity of heavy water is relatively smaller than that of ordinary water 4. The dielectric constant of heavy water is smaller than that of ordinary water Select the correct answer using the code given below:
Options
- A1 and 2
- B2 and 3
- C3 and 4
- D1 and 4
Correct answer
D. 1 and 4
Step-by-step solution
Most commercial nuclear reactors use normal water (also called light water) as a neutron moderator. Dielectric constant of heavy water is smaller than that of ordinary water.